20669680

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6983}}^1$

素因数の和:7033

約数の個数: 40

約数和(自身を含む): 49362912

約数和(自身を除く): 28693232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 6983, 13966, 27932, 34915, 55864, 69830, 111728, 139660, 258371, 279320, 516742, 558640, 1033484, 1291855, 2066968, 2583710, 4133936, 5167420, 10334840, 20669680]

約数ペア:

[(1, 20669680), (2, 10334840), (4, 5167420), (5, 4133936), (8, 2583710), (10, 2066968), (16, 1291855), (20, 1033484), (37, 558640), (40, 516742), (74, 279320), (80, 258371), (148, 139660), (185, 111728), (296, 69830), (370, 55864), (592, 34915), (740, 27932), (1480, 13966), (2960, 6983)]