81108840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:331

約数の個数: 128

約数和(自身を含む): 253186560

約数和(自身を除く): 172077720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 73, 94, 120, 141, 146, 188, 197, 219, 235, 282, 292, 365, 376, 394, 438, 470, 564, 584, 591, 705, 730, 788, 876, 940, 985, 1095, 1128, 1182, 1410, 1460, 1576, 1752, 1880, 1970, 2190, 2364, 2820, 2920, 2955, 3431, 3940, 4380, 4728, 5640, 5910, 6862, 7880, 8760, 9259, 10293, 11820, 13724, 14381, 17155, 18518, 20586, 23640, 27448, 27777, 28762, 34310, 37036, 41172, 43143, 46295, 51465, 55554, 57524, 68620, 71905, 74072, 82344, 86286, 92590, 102930, 111108, 115048, 137240, 138885, 143810, 172572, 185180, 205860, 215715, 222216, 277770, 287620, 345144, 370360, 411720, 431430, 555540, 575240, 675907, 862860, 1111080, 1351814, 1725720, 2027721, 2703628, 3379535, 4055442, 5407256, 6759070, 8110884, 10138605, 13518140, 16221768, 20277210, 27036280, 40554420, 81108840]

約数ペア:

[(1, 81108840), (2, 40554420), (3, 27036280), (4, 20277210), (5, 16221768), (6, 13518140), (8, 10138605), (10, 8110884), (12, 6759070), (15, 5407256), (20, 4055442), (24, 3379535), (30, 2703628), (40, 2027721), (47, 1725720), (60, 1351814), (73, 1111080), (94, 862860), (120, 675907), (141, 575240), (146, 555540), (188, 431430), (197, 411720), (219, 370360), (235, 345144), (282, 287620), (292, 277770), (365, 222216), (376, 215715), (394, 205860), (438, 185180), (470, 172572), (564, 143810), (584, 138885), (591, 137240), (705, 115048), (730, 111108), (788, 102930), (876, 92590), (940, 86286), (985, 82344), (1095, 74072), (1128, 71905), (1182, 68620), (1410, 57524), (1460, 55554), (1576, 51465), (1752, 46295), (1880, 43143), (1970, 41172), (2190, 37036), (2364, 34310), (2820, 28762), (2920, 27777), (2955, 27448), (3431, 23640), (3940, 20586), (4380, 18518), (4728, 17155), (5640, 14381), (5910, 13724), (6862, 11820), (7880, 10293), (8760, 9259)]