64475780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{1289}}^1$

素因数の和:1400

約数の個数: 48

約数和(自身を含む): 141084720

約数和(自身を除く): 76608940

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 305, 410, 610, 820, 1220, 1289, 2501, 2578, 5002, 5156, 6445, 10004, 12505, 12890, 25010, 25780, 50020, 52849, 78629, 105698, 157258, 211396, 264245, 314516, 393145, 528490, 786290, 1056980, 1572580, 3223789, 6447578, 12895156, 16118945, 32237890, 64475780]

約数ペア:

[(1, 64475780), (2, 32237890), (4, 16118945), (5, 12895156), (10, 6447578), (20, 3223789), (41, 1572580), (61, 1056980), (82, 786290), (122, 528490), (164, 393145), (205, 314516), (244, 264245), (305, 211396), (410, 157258), (610, 105698), (820, 78629), (1220, 52849), (1289, 50020), (2501, 25780), (2578, 25010), (5002, 12890), (5156, 12505), (6445, 10004)]