15618980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4621}}^1$

素因数の和:4656

約数の個数: 36

約数和(自身を含む): 35524692

約数和(自身を除く): 19905712

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 4621, 9242, 18484, 23105, 46210, 60073, 92420, 120146, 240292, 300365, 600730, 780949, 1201460, 1561898, 3123796, 3904745, 7809490, 15618980]

約数ペア:

[(1, 15618980), (2, 7809490), (4, 3904745), (5, 3123796), (10, 1561898), (13, 1201460), (20, 780949), (26, 600730), (52, 300365), (65, 240292), (130, 120146), (169, 92420), (260, 60073), (338, 46210), (676, 23105), (845, 18484), (1690, 9242), (3380, 4621)]