21380458840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41116267}}^1$

素因数の和:41116291

約数の個数: 32

約数和(自身を含む): 51806497680

約数和(自身を除く): 30426038840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41116267, 82232534, 164465068, 205581335, 328930136, 411162670, 534511471, 822325340, 1069022942, 1644650680, 2138045884, 2672557355, 4276091768, 5345114710, 10690229420, 21380458840]

約数ペア:

[(1, 21380458840), (2, 10690229420), (4, 5345114710), (5, 4276091768), (8, 2672557355), (10, 2138045884), (13, 1644650680), (20, 1069022942), (26, 822325340), (40, 534511471), (52, 411162670), (65, 328930136), (104, 205581335), (130, 164465068), (260, 82232534), (520, 41116267)]