21302320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20483}}^1$

素因数の和:20509

約数の個数: 40

約数和(自身を含む): 53340336

約数和(自身を除く): 32038016

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20483, 40966, 81932, 102415, 163864, 204830, 266279, 327728, 409660, 532558, 819320, 1065116, 1331395, 1638640, 2130232, 2662790, 4260464, 5325580, 10651160, 21302320]

約数ペア:

[(1, 21302320), (2, 10651160), (4, 5325580), (5, 4260464), (8, 2662790), (10, 2130232), (13, 1638640), (16, 1331395), (20, 1065116), (26, 819320), (40, 532558), (52, 409660), (65, 327728), (80, 266279), (104, 204830), (130, 163864), (208, 102415), (260, 81932), (520, 40966), (1040, 20483)]