64325720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:756

約数の個数: 64

約数和(自身を含む): 150927840

約数和(自身を除く): 86602120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 61, 82, 122, 164, 205, 244, 305, 328, 410, 488, 610, 643, 820, 1220, 1286, 1640, 2440, 2501, 2572, 3215, 5002, 5144, 6430, 10004, 12505, 12860, 20008, 25010, 25720, 26363, 39223, 50020, 52726, 78446, 100040, 105452, 131815, 156892, 196115, 210904, 263630, 313784, 392230, 527260, 784460, 1054520, 1568920, 1608143, 3216286, 6432572, 8040715, 12865144, 16081430, 32162860, 64325720]

約数ペア:

[(1, 64325720), (2, 32162860), (4, 16081430), (5, 12865144), (8, 8040715), (10, 6432572), (20, 3216286), (40, 1608143), (41, 1568920), (61, 1054520), (82, 784460), (122, 527260), (164, 392230), (205, 313784), (244, 263630), (305, 210904), (328, 196115), (410, 156892), (488, 131815), (610, 105452), (643, 100040), (820, 78446), (1220, 52726), (1286, 50020), (1640, 39223), (2440, 26363), (2501, 25720), (2572, 25010), (3215, 20008), (5002, 12860), (5144, 12505), (6430, 10004)]