21640424

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 46569600

約数和(自身を除く): 24929176

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 83, 92, 104, 109, 166, 184, 218, 299, 332, 436, 598, 664, 872, 1079, 1196, 1417, 1909, 2158, 2392, 2507, 2834, 3818, 4316, 5014, 5668, 7636, 8632, 9047, 10028, 11336, 15272, 18094, 20056, 24817, 32591, 36188, 49634, 65182, 72376, 99268, 117611, 130364, 198536, 208081, 235222, 260728, 416162, 470444, 832324, 940888, 1664648, 2705053, 5410106, 10820212, 21640424]

約数ペア:

[(1, 21640424), (2, 10820212), (4, 5410106), (8, 2705053), (13, 1664648), (23, 940888), (26, 832324), (46, 470444), (52, 416162), (83, 260728), (92, 235222), (104, 208081), (109, 198536), (166, 130364), (184, 117611), (218, 99268), (299, 72376), (332, 65182), (436, 49634), (598, 36188), (664, 32591), (872, 24817), (1079, 20056), (1196, 18094), (1417, 15272), (1909, 11336), (2158, 10028), (2392, 9047), (2507, 8632), (2834, 7636), (3818, 5668), (4316, 5014)]