81491670

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:212

約数の個数: 160

約数和(自身を含む): 241496640

約数和(自身を除く): 160004970

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 71, 78, 81, 90, 109, 117, 130, 135, 142, 162, 195, 213, 218, 234, 270, 327, 351, 355, 390, 405, 426, 545, 585, 639, 654, 702, 710, 810, 923, 981, 1053, 1065, 1090, 1170, 1278, 1417, 1635, 1755, 1846, 1917, 1962, 2106, 2130, 2769, 2834, 2943, 3195, 3270, 3510, 3834, 4251, 4615, 4905, 5265, 5538, 5751, 5886, 6390, 7085, 7739, 8307, 8502, 8829, 9230, 9585, 9810, 10530, 11502, 12753, 13845, 14170, 14715, 15478, 16614, 17658, 19170, 21255, 23217, 24921, 25506, 27690, 28755, 29430, 38259, 38695, 41535, 42510, 44145, 46434, 49842, 57510, 63765, 69651, 74763, 76518, 77390, 83070, 88290, 100607, 114777, 116085, 124605, 127530, 139302, 149526, 191295, 201214, 208953, 229554, 232170, 249210, 301821, 348255, 373815, 382590, 417906, 503035, 573885, 603642, 626859, 696510, 747630, 905463, 1006070, 1044765, 1147770, 1253718, 1509105, 1810926, 2089530, 2716389, 3018210, 3134295, 4527315, 5432778, 6268590, 8149167, 9054630, 13581945, 16298334, 27163890, 40745835, 81491670]

約数ペア:

[(1, 81491670), (2, 40745835), (3, 27163890), (5, 16298334), (6, 13581945), (9, 9054630), (10, 8149167), (13, 6268590), (15, 5432778), (18, 4527315), (26, 3134295), (27, 3018210), (30, 2716389), (39, 2089530), (45, 1810926), (54, 1509105), (65, 1253718), (71, 1147770), (78, 1044765), (81, 1006070), (90, 905463), (109, 747630), (117, 696510), (130, 626859), (135, 603642), (142, 573885), (162, 503035), (195, 417906), (213, 382590), (218, 373815), (234, 348255), (270, 301821), (327, 249210), (351, 232170), (355, 229554), (390, 208953), (405, 201214), (426, 191295), (545, 149526), (585, 139302), (639, 127530), (654, 124605), (702, 116085), (710, 114777), (810, 100607), (923, 88290), (981, 83070), (1053, 77390), (1065, 76518), (1090, 74763), (1170, 69651), (1278, 63765), (1417, 57510), (1635, 49842), (1755, 46434), (1846, 44145), (1917, 42510), (1962, 41535), (2106, 38695), (2130, 38259), (2769, 29430), (2834, 28755), (2943, 27690), (3195, 25506), (3270, 24921), (3510, 23217), (3834, 21255), (4251, 19170), (4615, 17658), (4905, 16614), (5265, 15478), (5538, 14715), (5751, 14170), (5886, 13845), (6390, 12753), (7085, 11502), (7739, 10530), (8307, 9810), (8502, 9585), (8829, 9230)]