28178982

素因数分解:

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

素因数の和:454

約数の個数: 64

約数和(自身を含む): 68160960

約数和(自身を除く): 39981978

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 137, 234, 274, 293, 351, 411, 586, 702, 822, 879, 1233, 1758, 1781, 2466, 2637, 3562, 3699, 3809, 5274, 5343, 7398, 7618, 7911, 10686, 11427, 15822, 16029, 22854, 32058, 34281, 40141, 48087, 68562, 80282, 96174, 102843, 120423, 205686, 240846, 361269, 521833, 722538, 1043666, 1083807, 1565499, 2167614, 3130998, 4696497, 9392994, 14089491, 28178982]

約数ペア:

[(1, 28178982), (2, 14089491), (3, 9392994), (6, 4696497), (9, 3130998), (13, 2167614), (18, 1565499), (26, 1083807), (27, 1043666), (39, 722538), (54, 521833), (78, 361269), (117, 240846), (137, 205686), (234, 120423), (274, 102843), (293, 96174), (351, 80282), (411, 68562), (586, 48087), (702, 40141), (822, 34281), (879, 32058), (1233, 22854), (1758, 16029), (1781, 15822), (2466, 11427), (2637, 10686), (3562, 7911), (3699, 7618), (3809, 7398), (5274, 5343)]