78772140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{877}}^1$

素因数の和:1391

約数の個数: 72

約数和(自身を含む): 239694000

約数和(自身を除く): 160921860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 499, 877, 998, 1497, 1754, 1996, 2495, 2631, 2994, 3508, 4385, 4491, 4990, 5262, 5988, 7485, 7893, 8770, 8982, 9980, 10524, 13155, 14970, 15786, 17540, 17964, 22455, 26310, 29940, 31572, 39465, 44910, 52620, 78930, 89820, 157860, 437623, 875246, 1312869, 1750492, 2188115, 2625738, 3938607, 4376230, 5251476, 6564345, 7877214, 8752460, 13128690, 15754428, 19693035, 26257380, 39386070, 78772140]

約数ペア:

[(1, 78772140), (2, 39386070), (3, 26257380), (4, 19693035), (5, 15754428), (6, 13128690), (9, 8752460), (10, 7877214), (12, 6564345), (15, 5251476), (18, 4376230), (20, 3938607), (30, 2625738), (36, 2188115), (45, 1750492), (60, 1312869), (90, 875246), (180, 437623), (499, 157860), (877, 89820), (998, 78930), (1497, 52620), (1754, 44910), (1996, 39465), (2495, 31572), (2631, 29940), (2994, 26310), (3508, 22455), (4385, 17964), (4491, 17540), (4990, 15786), (5262, 14970), (5988, 13155), (7485, 10524), (7893, 9980), (8770, 8982)]