20149690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 22981190

約数列:

[1, 2, 5, 10, 11, 19, 22, 31, 38, 55, 62, 95, 110, 155, 190, 209, 310, 311, 341, 418, 589, 622, 682, 1045, 1178, 1555, 1705, 2090, 2945, 3110, 3410, 3421, 5890, 5909, 6479, 6842, 9641, 11818, 12958, 17105, 19282, 29545, 32395, 34210, 48205, 59090, 64790, 64999, 96410, 106051, 129998, 183179, 212102, 324995, 366358, 530255, 649990, 915895, 1060510, 1831790, 2014969, 4029938, 10074845, 20149690]

約数ペア:

[(1, 20149690), (2, 10074845), (5, 4029938), (10, 2014969), (11, 1831790), (19, 1060510), (22, 915895), (31, 649990), (38, 530255), (55, 366358), (62, 324995), (95, 212102), (110, 183179), (155, 129998), (190, 106051), (209, 96410), (310, 64999), (311, 64790), (341, 59090), (418, 48205), (589, 34210), (622, 32395), (682, 29545), (1045, 19282), (1178, 17105), (1555, 12958), (1705, 11818), (2090, 9641), (2945, 6842), (3110, 6479), (3410, 5909), (3421, 5890)]