20705724

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{293}}^1$

素因数の和:467

約数の個数: 72

約数和(自身を含む): 56932512

約数和(自身を除く): 36226788

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 151, 156, 234, 293, 302, 453, 468, 586, 604, 879, 906, 1172, 1359, 1758, 1812, 1963, 2637, 2718, 3516, 3809, 3926, 5274, 5436, 5889, 7618, 7852, 10548, 11427, 11778, 15236, 17667, 22854, 23556, 34281, 35334, 44243, 45708, 68562, 70668, 88486, 132729, 137124, 176972, 265458, 398187, 530916, 575159, 796374, 1150318, 1592748, 1725477, 2300636, 3450954, 5176431, 6901908, 10352862, 20705724]

約数ペア:

[(1, 20705724), (2, 10352862), (3, 6901908), (4, 5176431), (6, 3450954), (9, 2300636), (12, 1725477), (13, 1592748), (18, 1150318), (26, 796374), (36, 575159), (39, 530916), (52, 398187), (78, 265458), (117, 176972), (151, 137124), (156, 132729), (234, 88486), (293, 70668), (302, 68562), (453, 45708), (468, 44243), (586, 35334), (604, 34281), (879, 23556), (906, 22854), (1172, 17667), (1359, 15236), (1758, 11778), (1812, 11427), (1963, 10548), (2637, 7852), (2718, 7618), (3516, 5889), (3809, 5436), (3926, 5274)]