21636680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41609}}^1$

素因数の和:41633

約数の個数: 32

約数和(自身を含む): 52428600

約数和(自身を除く): 30791920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41609, 83218, 166436, 208045, 332872, 416090, 540917, 832180, 1081834, 1664360, 2163668, 2704585, 4327336, 5409170, 10818340, 21636680]

約数ペア:

[(1, 21636680), (2, 10818340), (4, 5409170), (5, 4327336), (8, 2704585), (10, 2163668), (13, 1664360), (20, 1081834), (26, 832180), (40, 540917), (52, 416090), (65, 332872), (104, 208045), (130, 166436), (260, 83218), (520, 41609)]