218655645

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:446

約数の個数: 64

約数和(自身を含む): 391184640

約数和(自身を除く): 172528995

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 89, 129, 195, 215, 267, 293, 445, 559, 645, 879, 1157, 1335, 1465, 1677, 2795, 3471, 3809, 3827, 4395, 5785, 8385, 11427, 11481, 12599, 17355, 19045, 19135, 26077, 37797, 49751, 57135, 57405, 62995, 78231, 130385, 149253, 163787, 188985, 248755, 339001, 391155, 491361, 746265, 818935, 1017003, 1121311, 1695005, 2456805, 3363933, 5085015, 5606555, 14577043, 16819665, 43731129, 72885215, 218655645]

約数ペア:

[(1, 218655645), (3, 72885215), (5, 43731129), (13, 16819665), (15, 14577043), (39, 5606555), (43, 5085015), (65, 3363933), (89, 2456805), (129, 1695005), (195, 1121311), (215, 1017003), (267, 818935), (293, 746265), (445, 491361), (559, 391155), (645, 339001), (879, 248755), (1157, 188985), (1335, 163787), (1465, 149253), (1677, 130385), (2795, 78231), (3471, 62995), (3809, 57405), (3827, 57135), (4395, 49751), (5785, 37797), (8385, 26077), (11427, 19135), (11481, 19045), (12599, 17355)]