28996880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:504

約数の個数: 80

約数和(自身を含む): 74620224

約数和(自身を除く): 45623344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 83, 88, 110, 166, 176, 220, 332, 397, 415, 440, 664, 794, 830, 880, 913, 1328, 1588, 1660, 1826, 1985, 3176, 3320, 3652, 3970, 4367, 4565, 6352, 6640, 7304, 7940, 8734, 9130, 14608, 15880, 17468, 18260, 21835, 31760, 32951, 34936, 36520, 43670, 65902, 69872, 73040, 87340, 131804, 164755, 174680, 263608, 329510, 349360, 362461, 527216, 659020, 724922, 1318040, 1449844, 1812305, 2636080, 2899688, 3624610, 5799376, 7249220, 14498440, 28996880]

約数ペア:

[(1, 28996880), (2, 14498440), (4, 7249220), (5, 5799376), (8, 3624610), (10, 2899688), (11, 2636080), (16, 1812305), (20, 1449844), (22, 1318040), (40, 724922), (44, 659020), (55, 527216), (80, 362461), (83, 349360), (88, 329510), (110, 263608), (166, 174680), (176, 164755), (220, 131804), (332, 87340), (397, 73040), (415, 69872), (440, 65902), (664, 43670), (794, 36520), (830, 34936), (880, 32951), (913, 31760), (1328, 21835), (1588, 18260), (1660, 17468), (1826, 15880), (1985, 14608), (3176, 9130), (3320, 8734), (3652, 7940), (3970, 7304), (4367, 6640), (4565, 6352)]