20409740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3413}}^1$

素因数の和:3458

約数の個数: 48

約数和(自身を含む): 48178368

約数和(自身を除く): 27768628

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3413, 5980, 6826, 13652, 17065, 34130, 44369, 68260, 78499, 88738, 156998, 177476, 221845, 313996, 392495, 443690, 784990, 887380, 1020487, 1569980, 2040974, 4081948, 5102435, 10204870, 20409740]

約数ペア:

[(1, 20409740), (2, 10204870), (4, 5102435), (5, 4081948), (10, 2040974), (13, 1569980), (20, 1020487), (23, 887380), (26, 784990), (46, 443690), (52, 392495), (65, 313996), (92, 221845), (115, 177476), (130, 156998), (230, 88738), (260, 78499), (299, 68260), (460, 44369), (598, 34130), (1196, 17065), (1495, 13652), (2990, 6826), (3413, 5980)]