81351120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:317

約数の個数: 160

約数和(自身を含む): 270839808

約数和(自身を除く): 189488688

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 127, 136, 157, 170, 204, 240, 254, 255, 272, 314, 340, 381, 408, 471, 508, 510, 628, 635, 680, 762, 785, 816, 942, 1016, 1020, 1256, 1270, 1360, 1524, 1570, 1884, 1905, 2032, 2040, 2159, 2355, 2512, 2540, 2669, 3048, 3140, 3768, 3810, 4080, 4318, 4710, 5080, 5338, 6096, 6280, 6477, 7536, 7620, 8007, 8636, 9420, 10160, 10676, 10795, 12560, 12954, 13345, 15240, 16014, 17272, 18840, 19939, 21352, 21590, 25908, 26690, 30480, 32028, 32385, 34544, 37680, 39878, 40035, 42704, 43180, 51816, 53380, 59817, 64056, 64770, 79756, 80070, 86360, 99695, 103632, 106760, 119634, 128112, 129540, 159512, 160140, 172720, 199390, 213520, 239268, 259080, 299085, 319024, 320280, 338963, 398780, 478536, 518160, 598170, 640560, 677926, 797560, 957072, 1016889, 1196340, 1355852, 1595120, 1694815, 2033778, 2392680, 2711704, 3389630, 4067556, 4785360, 5084445, 5423408, 6779260, 8135112, 10168890, 13558520, 16270224, 20337780, 27117040, 40675560, 81351120]

約数ペア:

[(1, 81351120), (2, 40675560), (3, 27117040), (4, 20337780), (5, 16270224), (6, 13558520), (8, 10168890), (10, 8135112), (12, 6779260), (15, 5423408), (16, 5084445), (17, 4785360), (20, 4067556), (24, 3389630), (30, 2711704), (34, 2392680), (40, 2033778), (48, 1694815), (51, 1595120), (60, 1355852), (68, 1196340), (80, 1016889), (85, 957072), (102, 797560), (120, 677926), (127, 640560), (136, 598170), (157, 518160), (170, 478536), (204, 398780), (240, 338963), (254, 320280), (255, 319024), (272, 299085), (314, 259080), (340, 239268), (381, 213520), (408, 199390), (471, 172720), (508, 160140), (510, 159512), (628, 129540), (635, 128112), (680, 119634), (762, 106760), (785, 103632), (816, 99695), (942, 86360), (1016, 80070), (1020, 79756), (1256, 64770), (1270, 64056), (1360, 59817), (1524, 53380), (1570, 51816), (1884, 43180), (1905, 42704), (2032, 40035), (2040, 39878), (2159, 37680), (2355, 34544), (2512, 32385), (2540, 32028), (2669, 30480), (3048, 26690), (3140, 25908), (3768, 21590), (3810, 21352), (4080, 19939), (4318, 18840), (4710, 17272), (5080, 16014), (5338, 15240), (6096, 13345), (6280, 12954), (6477, 12560), (7536, 10795), (7620, 10676), (8007, 10160), (8636, 9420)]