20123176840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38698417}}^1$

素因数の和:38698441

約数の個数: 32

約数和(自身を含む): 48760006680

約数和(自身を除く): 28636829840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38698417, 77396834, 154793668, 193492085, 309587336, 386984170, 503079421, 773968340, 1006158842, 1547936680, 2012317684, 2515397105, 4024635368, 5030794210, 10061588420, 20123176840]

約数ペア:

[(1, 20123176840), (2, 10061588420), (4, 5030794210), (5, 4024635368), (8, 2515397105), (10, 2012317684), (13, 1547936680), (20, 1006158842), (26, 773968340), (40, 503079421), (52, 386984170), (65, 309587336), (104, 193492085), (130, 154793668), (260, 77396834), (520, 38698417)]