256210440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1091}}^1$

素因数の和:1227

約数の個数: 128

約数和(自身を含む): 817689600

約数和(自身を除く): 561479160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 103, 114, 120, 152, 190, 206, 228, 285, 309, 380, 412, 456, 515, 570, 618, 760, 824, 1030, 1091, 1140, 1236, 1545, 1957, 2060, 2182, 2280, 2472, 3090, 3273, 3914, 4120, 4364, 5455, 5871, 6180, 6546, 7828, 8728, 9785, 10910, 11742, 12360, 13092, 15656, 16365, 19570, 20729, 21820, 23484, 26184, 29355, 32730, 39140, 41458, 43640, 46968, 58710, 62187, 65460, 78280, 82916, 103645, 112373, 117420, 124374, 130920, 165832, 207290, 224746, 234840, 248748, 310935, 337119, 414580, 449492, 497496, 561865, 621870, 674238, 829160, 898984, 1123730, 1243740, 1348476, 1685595, 2135087, 2247460, 2487480, 2696952, 3371190, 4270174, 4494920, 6405261, 6742380, 8540348, 10675435, 12810522, 13484760, 17080696, 21350870, 25621044, 32026305, 42701740, 51242088, 64052610, 85403480, 128105220, 256210440]

約数ペア:

[(1, 256210440), (2, 128105220), (3, 85403480), (4, 64052610), (5, 51242088), (6, 42701740), (8, 32026305), (10, 25621044), (12, 21350870), (15, 17080696), (19, 13484760), (20, 12810522), (24, 10675435), (30, 8540348), (38, 6742380), (40, 6405261), (57, 4494920), (60, 4270174), (76, 3371190), (95, 2696952), (103, 2487480), (114, 2247460), (120, 2135087), (152, 1685595), (190, 1348476), (206, 1243740), (228, 1123730), (285, 898984), (309, 829160), (380, 674238), (412, 621870), (456, 561865), (515, 497496), (570, 449492), (618, 414580), (760, 337119), (824, 310935), (1030, 248748), (1091, 234840), (1140, 224746), (1236, 207290), (1545, 165832), (1957, 130920), (2060, 124374), (2182, 117420), (2280, 112373), (2472, 103645), (3090, 82916), (3273, 78280), (3914, 65460), (4120, 62187), (4364, 58710), (5455, 46968), (5871, 43640), (6180, 41458), (6546, 39140), (7828, 32730), (8728, 29355), (9785, 26184), (10910, 23484), (11742, 21820), (12360, 20729), (13092, 19570), (15656, 16365)]