65811980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19471}}^1$

素因数の和:19506

約数の個数: 36

約数和(自身を含む): 149661792

約数和(自身を除く): 83849812

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 19471, 38942, 77884, 97355, 194710, 253123, 389420, 506246, 1012492, 1265615, 2531230, 3290599, 5062460, 6581198, 13162396, 16452995, 32905990, 65811980]

約数ペア:

[(1, 65811980), (2, 32905990), (4, 16452995), (5, 13162396), (10, 6581198), (13, 5062460), (20, 3290599), (26, 2531230), (52, 1265615), (65, 1012492), (130, 506246), (169, 389420), (260, 253123), (338, 194710), (676, 97355), (845, 77884), (1690, 38942), (3380, 19471)]