64400140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{7541}}^1$

素因数の和:7618

約数の個数: 48

約数和(自身を含む): 157114944

約数和(自身を除く): 92714804

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 4270, 7541, 8540, 15082, 30164, 37705, 52787, 75410, 105574, 150820, 211148, 263935, 460001, 527870, 920002, 1055740, 1840004, 2300005, 3220007, 4600010, 6440014, 9200020, 12880028, 16100035, 32200070, 64400140]

約数ペア:

[(1, 64400140), (2, 32200070), (4, 16100035), (5, 12880028), (7, 9200020), (10, 6440014), (14, 4600010), (20, 3220007), (28, 2300005), (35, 1840004), (61, 1055740), (70, 920002), (122, 527870), (140, 460001), (244, 263935), (305, 211148), (427, 150820), (610, 105574), (854, 75410), (1220, 52787), (1708, 37705), (2135, 30164), (4270, 15082), (7541, 8540)]