81029440

素因数分解:

$2^6\times 5^1\times {\mathrm{313}}^1\times {\mathrm{809}}^1$

素因数の和:1139

約数の個数: 56

約数和(自身を含む): 193807080

約数和(自身を除く): 112777640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 313, 320, 626, 809, 1252, 1565, 1618, 2504, 3130, 3236, 4045, 5008, 6260, 6472, 8090, 10016, 12520, 12944, 16180, 20032, 25040, 25888, 32360, 50080, 51776, 64720, 100160, 129440, 253217, 258880, 506434, 1012868, 1266085, 2025736, 2532170, 4051472, 5064340, 8102944, 10128680, 16205888, 20257360, 40514720, 81029440]

約数ペア:

[(1, 81029440), (2, 40514720), (4, 20257360), (5, 16205888), (8, 10128680), (10, 8102944), (16, 5064340), (20, 4051472), (32, 2532170), (40, 2025736), (64, 1266085), (80, 1012868), (160, 506434), (313, 258880), (320, 253217), (626, 129440), (809, 100160), (1252, 64720), (1565, 51776), (1618, 50080), (2504, 32360), (3130, 25888), (3236, 25040), (4045, 20032), (5008, 16180), (6260, 12944), (6472, 12520), (8090, 10016)]