20609880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:185

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 44708520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 59, 60, 71, 82, 118, 120, 123, 142, 164, 177, 205, 213, 236, 246, 284, 295, 328, 354, 355, 410, 426, 472, 492, 568, 590, 615, 708, 710, 820, 852, 885, 984, 1065, 1180, 1230, 1416, 1420, 1640, 1704, 1770, 2130, 2360, 2419, 2460, 2840, 2911, 3540, 4189, 4260, 4838, 4920, 5822, 7080, 7257, 8378, 8520, 8733, 9676, 11644, 12095, 12567, 14514, 14555, 16756, 17466, 19352, 20945, 23288, 24190, 25134, 29028, 29110, 33512, 34932, 36285, 41890, 43665, 48380, 50268, 58056, 58220, 62835, 69864, 72570, 83780, 87330, 96760, 100536, 116440, 125670, 145140, 167560, 171749, 174660, 251340, 290280, 343498, 349320, 502680, 515247, 686996, 858745, 1030494, 1373992, 1717490, 2060988, 2576235, 3434980, 4121976, 5152470, 6869960, 10304940, 20609880]

約数ペア:

[(1, 20609880), (2, 10304940), (3, 6869960), (4, 5152470), (5, 4121976), (6, 3434980), (8, 2576235), (10, 2060988), (12, 1717490), (15, 1373992), (20, 1030494), (24, 858745), (30, 686996), (40, 515247), (41, 502680), (59, 349320), (60, 343498), (71, 290280), (82, 251340), (118, 174660), (120, 171749), (123, 167560), (142, 145140), (164, 125670), (177, 116440), (205, 100536), (213, 96760), (236, 87330), (246, 83780), (284, 72570), (295, 69864), (328, 62835), (354, 58220), (355, 58056), (410, 50268), (426, 48380), (472, 43665), (492, 41890), (568, 36285), (590, 34932), (615, 33512), (708, 29110), (710, 29028), (820, 25134), (852, 24190), (885, 23288), (984, 20945), (1065, 19352), (1180, 17466), (1230, 16756), (1416, 14555), (1420, 14514), (1640, 12567), (1704, 12095), (1770, 11644), (2130, 9676), (2360, 8733), (2419, 8520), (2460, 8378), (2840, 7257), (2911, 7080), (3540, 5822), (4189, 4920), (4260, 4838)]