19179640

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 25726760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 83, 106, 109, 166, 212, 218, 265, 332, 415, 424, 436, 530, 545, 664, 830, 872, 1060, 1090, 1660, 2120, 2180, 3320, 4360, 4399, 5777, 8798, 9047, 11554, 17596, 18094, 21995, 23108, 28885, 35192, 36188, 43990, 45235, 46216, 57770, 72376, 87980, 90470, 115540, 175960, 180940, 231080, 361880, 479491, 958982, 1917964, 2397455, 3835928, 4794910, 9589820, 19179640]

約数ペア:

[(1, 19179640), (2, 9589820), (4, 4794910), (5, 3835928), (8, 2397455), (10, 1917964), (20, 958982), (40, 479491), (53, 361880), (83, 231080), (106, 180940), (109, 175960), (166, 115540), (212, 90470), (218, 87980), (265, 72376), (332, 57770), (415, 46216), (424, 45235), (436, 43990), (530, 36188), (545, 35192), (664, 28885), (830, 23108), (872, 21995), (1060, 18094), (1090, 17596), (1660, 11554), (2120, 9047), (2180, 8798), (3320, 5777), (4360, 4399)]