19989450

素因数分解:

$2^1\times 3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:118

約数の個数: 192

約数和(自身を含む): 63745920

約数和(自身を除く): 43756470

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 17, 18, 25, 26, 27, 30, 34, 39, 45, 50, 51, 54, 65, 67, 75, 78, 85, 90, 102, 117, 130, 134, 135, 150, 153, 170, 195, 201, 221, 225, 234, 255, 270, 306, 325, 335, 351, 390, 402, 425, 442, 450, 459, 510, 585, 603, 650, 663, 670, 675, 702, 765, 850, 871, 918, 975, 1005, 1105, 1139, 1170, 1206, 1275, 1326, 1350, 1530, 1675, 1742, 1755, 1809, 1950, 1989, 2010, 2210, 2278, 2295, 2550, 2613, 2925, 3015, 3315, 3350, 3417, 3510, 3618, 3825, 3978, 4355, 4590, 5025, 5226, 5525, 5695, 5850, 5967, 6030, 6630, 6834, 7650, 7839, 8710, 8775, 9045, 9945, 10050, 10251, 11050, 11390, 11475, 11934, 13065, 14807, 15075, 15678, 16575, 17085, 17550, 18090, 19890, 20502, 21775, 22950, 23517, 26130, 28475, 29614, 29835, 30150, 30753, 33150, 34170, 39195, 43550, 44421, 45225, 47034, 49725, 51255, 56950, 59670, 61506, 65325, 74035, 78390, 85425, 88842, 90450, 99450, 102510, 117585, 130650, 133263, 148070, 149175, 153765, 170850, 195975, 222105, 235170, 256275, 266526, 298350, 307530, 370175, 391950, 399789, 444210, 512550, 587925, 666315, 740350, 768825, 799578, 1110525, 1175850, 1332630, 1537650, 1998945, 2221050, 3331575, 3997890, 6663150, 9994725, 19989450]

約数ペア:

[(1, 19989450), (2, 9994725), (3, 6663150), (5, 3997890), (6, 3331575), (9, 2221050), (10, 1998945), (13, 1537650), (15, 1332630), (17, 1175850), (18, 1110525), (25, 799578), (26, 768825), (27, 740350), (30, 666315), (34, 587925), (39, 512550), (45, 444210), (50, 399789), (51, 391950), (54, 370175), (65, 307530), (67, 298350), (75, 266526), (78, 256275), (85, 235170), (90, 222105), (102, 195975), (117, 170850), (130, 153765), (134, 149175), (135, 148070), (150, 133263), (153, 130650), (170, 117585), (195, 102510), (201, 99450), (221, 90450), (225, 88842), (234, 85425), (255, 78390), (270, 74035), (306, 65325), (325, 61506), (335, 59670), (351, 56950), (390, 51255), (402, 49725), (425, 47034), (442, 45225), (450, 44421), (459, 43550), (510, 39195), (585, 34170), (603, 33150), (650, 30753), (663, 30150), (670, 29835), (675, 29614), (702, 28475), (765, 26130), (850, 23517), (871, 22950), (918, 21775), (975, 20502), (1005, 19890), (1105, 18090), (1139, 17550), (1170, 17085), (1206, 16575), (1275, 15678), (1326, 15075), (1350, 14807), (1530, 13065), (1675, 11934), (1742, 11475), (1755, 11390), (1809, 11050), (1950, 10251), (1989, 10050), (2010, 9945), (2210, 9045), (2278, 8775), (2295, 8710), (2550, 7839), (2613, 7650), (2925, 6834), (3015, 6630), (3315, 6030), (3350, 5967), (3417, 5850), (3510, 5695), (3618, 5525), (3825, 5226), (3978, 5025), (4355, 4590)]