21260616

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{821}}^1$

素因数の和:926

約数の個数: 64

約数和(自身を含む): 58000320

約数和(自身を除く): 36739704

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 83, 104, 156, 166, 249, 312, 332, 498, 664, 821, 996, 1079, 1642, 1992, 2158, 2463, 3237, 3284, 4316, 4926, 6474, 6568, 8632, 9852, 10673, 12948, 19704, 21346, 25896, 32019, 42692, 64038, 68143, 85384, 128076, 136286, 204429, 256152, 272572, 408858, 545144, 817716, 885859, 1635432, 1771718, 2657577, 3543436, 5315154, 7086872, 10630308, 21260616]

約数ペア:

[(1, 21260616), (2, 10630308), (3, 7086872), (4, 5315154), (6, 3543436), (8, 2657577), (12, 1771718), (13, 1635432), (24, 885859), (26, 817716), (39, 545144), (52, 408858), (78, 272572), (83, 256152), (104, 204429), (156, 136286), (166, 128076), (249, 85384), (312, 68143), (332, 64038), (498, 42692), (664, 32019), (821, 25896), (996, 21346), (1079, 19704), (1642, 12948), (1992, 10673), (2158, 9852), (2463, 8632), (3237, 6568), (3284, 6474), (4316, 4926)]