28061820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 90574848

約数和(自身を除く): 62513028

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 47, 60, 62, 90, 93, 94, 107, 124, 141, 155, 180, 186, 188, 214, 235, 279, 282, 310, 321, 372, 423, 428, 465, 470, 535, 558, 564, 620, 642, 705, 846, 930, 940, 963, 1070, 1116, 1284, 1395, 1410, 1457, 1605, 1692, 1860, 1926, 2115, 2140, 2790, 2820, 2914, 3210, 3317, 3852, 4230, 4371, 4815, 5029, 5580, 5828, 6420, 6634, 7285, 8460, 8742, 9630, 9951, 10058, 13113, 13268, 14570, 15087, 16585, 17484, 19260, 19902, 20116, 21855, 25145, 26226, 29140, 29853, 30174, 33170, 39804, 43710, 45261, 49755, 50290, 52452, 59706, 60348, 65565, 66340, 75435, 87420, 90522, 99510, 100580, 119412, 131130, 149265, 150870, 155899, 181044, 199020, 226305, 262260, 298530, 301740, 311798, 452610, 467697, 597060, 623596, 779495, 905220, 935394, 1403091, 1558990, 1870788, 2338485, 2806182, 3117980, 4676970, 5612364, 7015455, 9353940, 14030910, 28061820]

約数ペア:

[(1, 28061820), (2, 14030910), (3, 9353940), (4, 7015455), (5, 5612364), (6, 4676970), (9, 3117980), (10, 2806182), (12, 2338485), (15, 1870788), (18, 1558990), (20, 1403091), (30, 935394), (31, 905220), (36, 779495), (45, 623596), (47, 597060), (60, 467697), (62, 452610), (90, 311798), (93, 301740), (94, 298530), (107, 262260), (124, 226305), (141, 199020), (155, 181044), (180, 155899), (186, 150870), (188, 149265), (214, 131130), (235, 119412), (279, 100580), (282, 99510), (310, 90522), (321, 87420), (372, 75435), (423, 66340), (428, 65565), (465, 60348), (470, 59706), (535, 52452), (558, 50290), (564, 49755), (620, 45261), (642, 43710), (705, 39804), (846, 33170), (930, 30174), (940, 29853), (963, 29140), (1070, 26226), (1116, 25145), (1284, 21855), (1395, 20116), (1410, 19902), (1457, 19260), (1605, 17484), (1692, 16585), (1860, 15087), (1926, 14570), (2115, 13268), (2140, 13113), (2790, 10058), (2820, 9951), (2914, 9630), (3210, 8742), (3317, 8460), (3852, 7285), (4230, 6634), (4371, 6420), (4815, 5828), (5029, 5580)]