305248880

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{881}}^1$

素因数の和:1026

約数の個数: 80

約数和(自身を含む): 732328128

約数和(自身を除く): 427079248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 71, 80, 122, 142, 244, 284, 305, 355, 488, 568, 610, 710, 881, 976, 1136, 1220, 1420, 1762, 2440, 2840, 3524, 4331, 4405, 4880, 5680, 7048, 8662, 8810, 14096, 17324, 17620, 21655, 34648, 35240, 43310, 53741, 62551, 69296, 70480, 86620, 107482, 125102, 173240, 214964, 250204, 268705, 312755, 346480, 429928, 500408, 537410, 625510, 859856, 1000816, 1074820, 1251020, 2149640, 2502040, 3815611, 4299280, 5004080, 7631222, 15262444, 19078055, 30524888, 38156110, 61049776, 76312220, 152624440, 305248880]

約数ペア:

[(1, 305248880), (2, 152624440), (4, 76312220), (5, 61049776), (8, 38156110), (10, 30524888), (16, 19078055), (20, 15262444), (40, 7631222), (61, 5004080), (71, 4299280), (80, 3815611), (122, 2502040), (142, 2149640), (244, 1251020), (284, 1074820), (305, 1000816), (355, 859856), (488, 625510), (568, 537410), (610, 500408), (710, 429928), (881, 346480), (976, 312755), (1136, 268705), (1220, 250204), (1420, 214964), (1762, 173240), (2440, 125102), (2840, 107482), (3524, 86620), (4331, 70480), (4405, 69296), (4880, 62551), (5680, 53741), (7048, 43310), (8662, 35240), (8810, 34648), (14096, 21655), (17324, 17620)]