31080400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 120

約数和(自身を含む): 82876640

約数和(自身を除く): 51796240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 43, 50, 52, 65, 80, 86, 100, 104, 130, 139, 172, 200, 208, 215, 260, 278, 325, 344, 400, 430, 520, 556, 559, 650, 688, 695, 860, 1040, 1075, 1112, 1118, 1300, 1390, 1720, 1807, 2150, 2224, 2236, 2600, 2780, 2795, 3440, 3475, 3614, 4300, 4472, 5200, 5560, 5590, 5977, 6950, 7228, 8600, 8944, 9035, 11120, 11180, 11954, 13900, 13975, 14456, 17200, 18070, 22360, 23908, 27800, 27950, 28912, 29885, 36140, 44720, 45175, 47816, 55600, 55900, 59770, 72280, 77701, 90350, 95632, 111800, 119540, 144560, 149425, 155402, 180700, 223600, 239080, 298850, 310804, 361400, 388505, 478160, 597700, 621608, 722800, 777010, 1195400, 1243216, 1554020, 1942525, 2390800, 3108040, 3885050, 6216080, 7770100, 15540200, 31080400]

約数ペア:

[(1, 31080400), (2, 15540200), (4, 7770100), (5, 6216080), (8, 3885050), (10, 3108040), (13, 2390800), (16, 1942525), (20, 1554020), (25, 1243216), (26, 1195400), (40, 777010), (43, 722800), (50, 621608), (52, 597700), (65, 478160), (80, 388505), (86, 361400), (100, 310804), (104, 298850), (130, 239080), (139, 223600), (172, 180700), (200, 155402), (208, 149425), (215, 144560), (260, 119540), (278, 111800), (325, 95632), (344, 90350), (400, 77701), (430, 72280), (520, 59770), (556, 55900), (559, 55600), (650, 47816), (688, 45175), (695, 44720), (860, 36140), (1040, 29885), (1075, 28912), (1112, 27950), (1118, 27800), (1300, 23908), (1390, 22360), (1720, 18070), (1807, 17200), (2150, 14456), (2224, 13975), (2236, 13900), (2600, 11954), (2780, 11180), (2795, 11120), (3440, 9035), (3475, 8944), (3614, 8600), (4300, 7228), (4472, 6950), (5200, 5977), (5560, 5590)]