28220850

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1$

素因数の和:90

約数の個数: 216

約数和(自身を含む): 95017728

約数和(自身を除く): 66796878

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 25, 30, 31, 34, 35, 42, 45, 50, 51, 62, 63, 70, 75, 85, 90, 93, 102, 105, 119, 126, 150, 153, 155, 170, 175, 186, 210, 217, 225, 238, 255, 279, 289, 306, 310, 315, 350, 357, 425, 434, 450, 465, 510, 525, 527, 558, 578, 595, 630, 651, 714, 765, 775, 850, 867, 930, 1050, 1054, 1071, 1085, 1190, 1275, 1302, 1395, 1445, 1530, 1550, 1575, 1581, 1734, 1785, 1953, 2023, 2142, 2170, 2325, 2550, 2601, 2635, 2790, 2890, 2975, 3150, 3162, 3255, 3570, 3689, 3825, 3906, 4046, 4335, 4650, 4743, 5202, 5270, 5355, 5425, 5950, 6069, 6510, 6975, 7225, 7378, 7650, 7905, 8670, 8925, 8959, 9486, 9765, 10115, 10710, 10850, 11067, 12138, 13005, 13175, 13950, 14450, 15810, 16275, 17850, 17918, 18207, 18445, 19530, 20230, 21675, 22134, 23715, 26010, 26350, 26775, 26877, 30345, 32550, 33201, 36414, 36890, 39525, 43350, 44795, 47430, 48825, 50575, 53550, 53754, 55335, 60690, 62713, 65025, 66402, 79050, 80631, 89590, 91035, 92225, 97650, 101150, 110670, 118575, 125426, 130050, 134385, 151725, 161262, 166005, 182070, 184450, 188139, 223975, 237150, 268770, 276675, 303450, 313565, 332010, 376278, 403155, 447950, 455175, 553350, 564417, 627130, 671925, 806310, 830025, 910350, 940695, 1128834, 1343850, 1567825, 1660050, 1881390, 2015775, 2822085, 3135650, 4031550, 4703475, 5644170, 9406950, 14110425, 28220850]

約数ペア:

[(1, 28220850), (2, 14110425), (3, 9406950), (5, 5644170), (6, 4703475), (7, 4031550), (9, 3135650), (10, 2822085), (14, 2015775), (15, 1881390), (17, 1660050), (18, 1567825), (21, 1343850), (25, 1128834), (30, 940695), (31, 910350), (34, 830025), (35, 806310), (42, 671925), (45, 627130), (50, 564417), (51, 553350), (62, 455175), (63, 447950), (70, 403155), (75, 376278), (85, 332010), (90, 313565), (93, 303450), (102, 276675), (105, 268770), (119, 237150), (126, 223975), (150, 188139), (153, 184450), (155, 182070), (170, 166005), (175, 161262), (186, 151725), (210, 134385), (217, 130050), (225, 125426), (238, 118575), (255, 110670), (279, 101150), (289, 97650), (306, 92225), (310, 91035), (315, 89590), (350, 80631), (357, 79050), (425, 66402), (434, 65025), (450, 62713), (465, 60690), (510, 55335), (525, 53754), (527, 53550), (558, 50575), (578, 48825), (595, 47430), (630, 44795), (651, 43350), (714, 39525), (765, 36890), (775, 36414), (850, 33201), (867, 32550), (930, 30345), (1050, 26877), (1054, 26775), (1071, 26350), (1085, 26010), (1190, 23715), (1275, 22134), (1302, 21675), (1395, 20230), (1445, 19530), (1530, 18445), (1550, 18207), (1575, 17918), (1581, 17850), (1734, 16275), (1785, 15810), (1953, 14450), (2023, 13950), (2142, 13175), (2170, 13005), (2325, 12138), (2550, 11067), (2601, 10850), (2635, 10710), (2790, 10115), (2890, 9765), (2975, 9486), (3150, 8959), (3162, 8925), (3255, 8670), (3570, 7905), (3689, 7650), (3825, 7378), (3906, 7225), (4046, 6975), (4335, 6510), (4650, 6069), (4743, 5950), (5202, 5425), (5270, 5355)]