166608520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{320401}}^1$

素因数の和:320425

約数の個数: 32

約数和(自身を含む): 403706520

約数和(自身を除く): 237098000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 320401, 640802, 1281604, 1602005, 2563208, 3204010, 4165213, 6408020, 8330426, 12816040, 16660852, 20826065, 33321704, 41652130, 83304260, 166608520]

約数ペア:

[(1, 166608520), (2, 83304260), (4, 41652130), (5, 33321704), (8, 20826065), (10, 16660852), (13, 12816040), (20, 8330426), (26, 6408020), (40, 4165213), (52, 3204010), (65, 2563208), (104, 1602005), (130, 1281604), (260, 640802), (520, 320401)]