215309920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:1005

約数の個数: 144

約数和(自身を含む): 612768240

約数和(自身を除く): 397458320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 140, 145, 160, 196, 203, 224, 232, 245, 280, 290, 392, 406, 464, 490, 560, 580, 784, 812, 928, 947, 980, 1015, 1120, 1160, 1421, 1568, 1624, 1894, 1960, 2030, 2320, 2842, 3248, 3788, 3920, 4060, 4640, 4735, 5684, 6496, 6629, 7105, 7576, 7840, 8120, 9470, 11368, 13258, 14210, 15152, 16240, 18940, 22736, 26516, 27463, 28420, 30304, 32480, 33145, 37880, 45472, 46403, 53032, 54926, 56840, 66290, 75760, 92806, 106064, 109852, 113680, 132580, 137315, 151520, 185612, 192241, 212128, 219704, 227360, 232015, 265160, 274630, 371224, 384482, 439408, 464030, 530320, 549260, 742448, 768964, 878816, 928060, 961205, 1060640, 1098520, 1345687, 1484896, 1537928, 1856120, 1922410, 2197040, 2691374, 3075856, 3712240, 3844820, 4394080, 5382748, 6151712, 6728435, 7424480, 7689640, 10765496, 13456870, 15379280, 21530992, 26913740, 30758560, 43061984, 53827480, 107654960, 215309920]

約数ペア:

[(1, 215309920), (2, 107654960), (4, 53827480), (5, 43061984), (7, 30758560), (8, 26913740), (10, 21530992), (14, 15379280), (16, 13456870), (20, 10765496), (28, 7689640), (29, 7424480), (32, 6728435), (35, 6151712), (40, 5382748), (49, 4394080), (56, 3844820), (58, 3712240), (70, 3075856), (80, 2691374), (98, 2197040), (112, 1922410), (116, 1856120), (140, 1537928), (145, 1484896), (160, 1345687), (196, 1098520), (203, 1060640), (224, 961205), (232, 928060), (245, 878816), (280, 768964), (290, 742448), (392, 549260), (406, 530320), (464, 464030), (490, 439408), (560, 384482), (580, 371224), (784, 274630), (812, 265160), (928, 232015), (947, 227360), (980, 219704), (1015, 212128), (1120, 192241), (1160, 185612), (1421, 151520), (1568, 137315), (1624, 132580), (1894, 113680), (1960, 109852), (2030, 106064), (2320, 92806), (2842, 75760), (3248, 66290), (3788, 56840), (3920, 54926), (4060, 53032), (4640, 46403), (4735, 45472), (5684, 37880), (6496, 33145), (6629, 32480), (7105, 30304), (7576, 28420), (7840, 27463), (8120, 26516), (9470, 22736), (11368, 18940), (13258, 16240), (14210, 15152)]