81020856

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:425

約数の個数: 128

約数和(自身を含む): 244776960

約数和(自身を除く): 163756104

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 42, 47, 56, 62, 84, 93, 94, 124, 141, 168, 186, 188, 217, 248, 282, 329, 331, 372, 376, 434, 564, 651, 658, 662, 744, 868, 987, 993, 1128, 1302, 1316, 1324, 1457, 1736, 1974, 1986, 2317, 2604, 2632, 2648, 2914, 3948, 3972, 4371, 4634, 5208, 5828, 6951, 7896, 7944, 8742, 9268, 10199, 10261, 11656, 13902, 15557, 17484, 18536, 20398, 20522, 27804, 30597, 30783, 31114, 34968, 40796, 41044, 46671, 55608, 61194, 61566, 62228, 71827, 81592, 82088, 93342, 108899, 122388, 123132, 124456, 143654, 186684, 215481, 217798, 244776, 246264, 287308, 326697, 373368, 430962, 435596, 482267, 574616, 653394, 861924, 871192, 964534, 1306788, 1446801, 1723848, 1929068, 2613576, 2893602, 3375869, 3858136, 5787204, 6751738, 10127607, 11574408, 13503476, 20255214, 27006952, 40510428, 81020856]

約数ペア:

[(1, 81020856), (2, 40510428), (3, 27006952), (4, 20255214), (6, 13503476), (7, 11574408), (8, 10127607), (12, 6751738), (14, 5787204), (21, 3858136), (24, 3375869), (28, 2893602), (31, 2613576), (42, 1929068), (47, 1723848), (56, 1446801), (62, 1306788), (84, 964534), (93, 871192), (94, 861924), (124, 653394), (141, 574616), (168, 482267), (186, 435596), (188, 430962), (217, 373368), (248, 326697), (282, 287308), (329, 246264), (331, 244776), (372, 217798), (376, 215481), (434, 186684), (564, 143654), (651, 124456), (658, 123132), (662, 122388), (744, 108899), (868, 93342), (987, 82088), (993, 81592), (1128, 71827), (1302, 62228), (1316, 61566), (1324, 61194), (1457, 55608), (1736, 46671), (1974, 41044), (1986, 40796), (2317, 34968), (2604, 31114), (2632, 30783), (2648, 30597), (2914, 27804), (3948, 20522), (3972, 20398), (4371, 18536), (4634, 17484), (5208, 15557), (5828, 13902), (6951, 11656), (7896, 10261), (7944, 10199), (8742, 9268)]