20117936

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2061

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 22290064

約数列:

[1, 2, 4, 8, 16, 17, 34, 37, 68, 74, 136, 148, 272, 296, 592, 629, 1258, 1999, 2516, 3998, 5032, 7996, 10064, 15992, 31984, 33983, 67966, 73963, 135932, 147926, 271864, 295852, 543728, 591704, 1183408, 1257371, 2514742, 5029484, 10058968, 20117936]

約数ペア:

[(1, 20117936), (2, 10058968), (4, 5029484), (8, 2514742), (16, 1257371), (17, 1183408), (34, 591704), (37, 543728), (68, 295852), (74, 271864), (136, 147926), (148, 135932), (272, 73963), (296, 67966), (592, 33983), (629, 31984), (1258, 15992), (1999, 10064), (2516, 7996), (3998, 5032)]