20708730

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{10957}}^1$

素因数の和:10980

約数の個数: 64

約数和(自身を含む): 63118080

約数和(自身を除く): 42409350

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 10957, 21914, 32871, 54785, 65742, 76699, 98613, 109570, 153398, 164355, 197226, 230097, 295839, 328710, 383495, 460194, 493065, 591678, 690291, 766990, 986130, 1150485, 1380582, 1479195, 2070873, 2300970, 2958390, 3451455, 4141746, 6902910, 10354365, 20708730]

約数ペア:

[(1, 20708730), (2, 10354365), (3, 6902910), (5, 4141746), (6, 3451455), (7, 2958390), (9, 2300970), (10, 2070873), (14, 1479195), (15, 1380582), (18, 1150485), (21, 986130), (27, 766990), (30, 690291), (35, 591678), (42, 493065), (45, 460194), (54, 383495), (63, 328710), (70, 295839), (90, 230097), (105, 197226), (126, 164355), (135, 153398), (189, 109570), (210, 98613), (270, 76699), (315, 65742), (378, 54785), (630, 32871), (945, 21914), (1890, 10957)]