654323920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199489}}^1$

素因数の和:199543

約数の個数: 40

約数和(自身を含む): 1558415880

約数和(自身を除く): 904091960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 199489, 398978, 797956, 997445, 1595912, 1994890, 3191824, 3989780, 7979560, 8179049, 15959120, 16358098, 32716196, 40895245, 65432392, 81790490, 130864784, 163580980, 327161960, 654323920]

約数ペア:

[(1, 654323920), (2, 327161960), (4, 163580980), (5, 130864784), (8, 81790490), (10, 65432392), (16, 40895245), (20, 32716196), (40, 16358098), (41, 15959120), (80, 8179049), (82, 7979560), (164, 3989780), (205, 3191824), (328, 1994890), (410, 1595912), (656, 997445), (820, 797956), (1640, 398978), (3280, 199489)]