21577660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2243}}^1$

素因数の和:2302

約数の個数: 48

約数和(自身を含む): 50139936

約数和(自身を除く): 28562276

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2243, 2405, 4486, 4810, 8972, 9620, 11215, 22430, 29159, 44860, 58318, 82991, 116636, 145795, 165982, 291590, 331964, 414955, 583180, 829910, 1078883, 1659820, 2157766, 4315532, 5394415, 10788830, 21577660]

約数ペア:

[(1, 21577660), (2, 10788830), (4, 5394415), (5, 4315532), (10, 2157766), (13, 1659820), (20, 1078883), (26, 829910), (37, 583180), (52, 414955), (65, 331964), (74, 291590), (130, 165982), (148, 145795), (185, 116636), (260, 82991), (370, 58318), (481, 44860), (740, 29159), (962, 22430), (1924, 11215), (2243, 9620), (2405, 8972), (4486, 4810)]