18785988

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:453

約数の個数: 72

約数和(自身を含む): 51688728

約数和(自身を除く): 32902740

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 137, 156, 234, 274, 293, 411, 468, 548, 586, 822, 879, 1172, 1233, 1644, 1758, 1781, 2466, 2637, 3516, 3562, 3809, 4932, 5274, 5343, 7124, 7618, 10548, 10686, 11427, 15236, 16029, 21372, 22854, 32058, 34281, 40141, 45708, 64116, 68562, 80282, 120423, 137124, 160564, 240846, 361269, 481692, 521833, 722538, 1043666, 1445076, 1565499, 2087332, 3130998, 4696497, 6261996, 9392994, 18785988]

約数ペア:

[(1, 18785988), (2, 9392994), (3, 6261996), (4, 4696497), (6, 3130998), (9, 2087332), (12, 1565499), (13, 1445076), (18, 1043666), (26, 722538), (36, 521833), (39, 481692), (52, 361269), (78, 240846), (117, 160564), (137, 137124), (156, 120423), (234, 80282), (274, 68562), (293, 64116), (411, 45708), (468, 40141), (548, 34281), (586, 32058), (822, 22854), (879, 21372), (1172, 16029), (1233, 15236), (1644, 11427), (1758, 10686), (1781, 10548), (2466, 7618), (2637, 7124), (3516, 5343), (3562, 5274), (3809, 4932)]