81691330

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{293}}^1\times {\mathrm{569}}^1$

素因数の和:883

約数の個数: 48

約数和(自身を含む): 171937080

約数和(自身を除く): 90245750

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 293, 490, 569, 586, 1138, 1465, 2051, 2845, 2930, 3983, 4102, 5690, 7966, 10255, 14357, 19915, 20510, 27881, 28714, 39830, 55762, 71785, 139405, 143570, 166717, 278810, 333434, 833585, 1167019, 1667170, 2334038, 5835095, 8169133, 11670190, 16338266, 40845665, 81691330]

約数ペア:

[(1, 81691330), (2, 40845665), (5, 16338266), (7, 11670190), (10, 8169133), (14, 5835095), (35, 2334038), (49, 1667170), (70, 1167019), (98, 833585), (245, 333434), (293, 278810), (490, 166717), (569, 143570), (586, 139405), (1138, 71785), (1465, 55762), (2051, 39830), (2845, 28714), (2930, 27881), (3983, 20510), (4102, 19915), (5690, 14357), (7966, 10255)]