261886380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{281}}^1\times {\mathrm{317}}^1$

素因数の和:624

約数の個数: 144

約数和(自身を含む): 858737376

約数和(自身を除く): 596850996

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 281, 294, 317, 420, 490, 562, 588, 634, 735, 843, 951, 980, 1124, 1268, 1405, 1470, 1585, 1686, 1902, 1967, 2219, 2810, 2940, 3170, 3372, 3804, 3934, 4215, 4438, 4755, 5620, 5901, 6340, 6657, 7868, 8430, 8876, 9510, 9835, 11095, 11802, 13314, 13769, 15533, 16860, 19020, 19670, 22190, 23604, 26628, 27538, 29505, 31066, 33285, 39340, 41307, 44380, 46599, 55076, 59010, 62132, 66570, 68845, 77665, 82614, 89077, 93198, 118020, 133140, 137690, 155330, 165228, 178154, 186396, 206535, 232995, 267231, 275380, 310660, 356308, 413070, 445385, 465990, 534462, 623539, 826140, 890770, 931980, 1068924, 1247078, 1336155, 1781540, 1870617, 2494156, 2672310, 3117695, 3741234, 4364773, 5344620, 6235390, 7482468, 8729546, 9353085, 12470780, 13094319, 17459092, 18706170, 21823865, 26188638, 37412340, 43647730, 52377276, 65471595, 87295460, 130943190, 261886380]

約数ペア:

[(1, 261886380), (2, 130943190), (3, 87295460), (4, 65471595), (5, 52377276), (6, 43647730), (7, 37412340), (10, 26188638), (12, 21823865), (14, 18706170), (15, 17459092), (20, 13094319), (21, 12470780), (28, 9353085), (30, 8729546), (35, 7482468), (42, 6235390), (49, 5344620), (60, 4364773), (70, 3741234), (84, 3117695), (98, 2672310), (105, 2494156), (140, 1870617), (147, 1781540), (196, 1336155), (210, 1247078), (245, 1068924), (281, 931980), (294, 890770), (317, 826140), (420, 623539), (490, 534462), (562, 465990), (588, 445385), (634, 413070), (735, 356308), (843, 310660), (951, 275380), (980, 267231), (1124, 232995), (1268, 206535), (1405, 186396), (1470, 178154), (1585, 165228), (1686, 155330), (1902, 137690), (1967, 133140), (2219, 118020), (2810, 93198), (2940, 89077), (3170, 82614), (3372, 77665), (3804, 68845), (3934, 66570), (4215, 62132), (4438, 59010), (4755, 55076), (5620, 46599), (5901, 44380), (6340, 41307), (6657, 39340), (7868, 33285), (8430, 31066), (8876, 29505), (9510, 27538), (9835, 26628), (11095, 23604), (11802, 22190), (13314, 19670), (13769, 19020), (15533, 16860)]