39620840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1993}}^1$

素因数の和:2082

約数の個数: 64

約数和(自身を含む): 103368960

約数和(自身を除く): 63748120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 1993, 2485, 2840, 3976, 3986, 4970, 7972, 9940, 9965, 13951, 15944, 19880, 19930, 27902, 39860, 55804, 69755, 79720, 111608, 139510, 141503, 279020, 283006, 558040, 566012, 707515, 990521, 1132024, 1415030, 1981042, 2830060, 3962084, 4952605, 5660120, 7924168, 9905210, 19810420, 39620840]

約数ペア:

[(1, 39620840), (2, 19810420), (4, 9905210), (5, 7924168), (7, 5660120), (8, 4952605), (10, 3962084), (14, 2830060), (20, 1981042), (28, 1415030), (35, 1132024), (40, 990521), (56, 707515), (70, 566012), (71, 558040), (140, 283006), (142, 279020), (280, 141503), (284, 139510), (355, 111608), (497, 79720), (568, 69755), (710, 55804), (994, 39860), (1420, 27902), (1988, 19930), (1993, 19880), (2485, 15944), (2840, 13951), (3976, 9965), (3986, 9940), (4970, 7972)]