31368280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{617}}^1$

素因数の和:700

約数の個数: 64

約数和(自身を含む): 74753280

約数和(自身を除く): 43385000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 617, 620, 820, 1234, 1240, 1271, 1640, 2468, 2542, 3085, 4936, 5084, 6170, 6355, 10168, 12340, 12710, 19127, 24680, 25297, 25420, 38254, 50594, 50840, 76508, 95635, 101188, 126485, 153016, 191270, 202376, 252970, 382540, 505940, 765080, 784207, 1011880, 1568414, 3136828, 3921035, 6273656, 7842070, 15684140, 31368280]

約数ペア:

[(1, 31368280), (2, 15684140), (4, 7842070), (5, 6273656), (8, 3921035), (10, 3136828), (20, 1568414), (31, 1011880), (40, 784207), (41, 765080), (62, 505940), (82, 382540), (124, 252970), (155, 202376), (164, 191270), (205, 153016), (248, 126485), (310, 101188), (328, 95635), (410, 76508), (617, 50840), (620, 50594), (820, 38254), (1234, 25420), (1240, 25297), (1271, 24680), (1640, 19127), (2468, 12710), (2542, 12340), (3085, 10168), (4936, 6355), (5084, 6170)]