388889720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{7207}}^1$

素因数の和:7308

約数の個数: 64

約数和(自身を含む): 934156800

約数和(自身を除く): 545267080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 355, 380, 568, 710, 760, 1349, 1420, 2698, 2840, 5396, 6745, 7207, 10792, 13490, 14414, 26980, 28828, 36035, 53960, 57656, 72070, 136933, 144140, 273866, 288280, 511697, 547732, 684665, 1023394, 1095464, 1369330, 2046788, 2558485, 2738660, 4093576, 5116970, 5477320, 9722243, 10233940, 19444486, 20467880, 38888972, 48611215, 77777944, 97222430, 194444860, 388889720]

約数ペア:

[(1, 388889720), (2, 194444860), (4, 97222430), (5, 77777944), (8, 48611215), (10, 38888972), (19, 20467880), (20, 19444486), (38, 10233940), (40, 9722243), (71, 5477320), (76, 5116970), (95, 4093576), (142, 2738660), (152, 2558485), (190, 2046788), (284, 1369330), (355, 1095464), (380, 1023394), (568, 684665), (710, 547732), (760, 511697), (1349, 288280), (1420, 273866), (2698, 144140), (2840, 136933), (5396, 72070), (6745, 57656), (7207, 53960), (10792, 36035), (13490, 28828), (14414, 26980)]