18061780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 45360000

約数和(自身を除く): 27298220

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 29, 38, 44, 55, 58, 76, 95, 110, 116, 145, 149, 190, 209, 220, 290, 298, 319, 380, 418, 551, 580, 596, 638, 745, 836, 1045, 1102, 1276, 1490, 1595, 1639, 2090, 2204, 2755, 2831, 2980, 3190, 3278, 4180, 4321, 5510, 5662, 6061, 6380, 6556, 8195, 8642, 11020, 11324, 12122, 14155, 16390, 17284, 21605, 24244, 28310, 30305, 31141, 32780, 43210, 47531, 56620, 60610, 62282, 82099, 86420, 95062, 121220, 124564, 155705, 164198, 190124, 237655, 311410, 328396, 410495, 475310, 622820, 820990, 903089, 950620, 1641980, 1806178, 3612356, 4515445, 9030890, 18061780]

約数ペア:

[(1, 18061780), (2, 9030890), (4, 4515445), (5, 3612356), (10, 1806178), (11, 1641980), (19, 950620), (20, 903089), (22, 820990), (29, 622820), (38, 475310), (44, 410495), (55, 328396), (58, 311410), (76, 237655), (95, 190124), (110, 164198), (116, 155705), (145, 124564), (149, 121220), (190, 95062), (209, 86420), (220, 82099), (290, 62282), (298, 60610), (319, 56620), (380, 47531), (418, 43210), (551, 32780), (580, 31141), (596, 30305), (638, 28310), (745, 24244), (836, 21605), (1045, 17284), (1102, 16390), (1276, 14155), (1490, 12122), (1595, 11324), (1639, 11020), (2090, 8642), (2204, 8195), (2755, 6556), (2831, 6380), (2980, 6061), (3190, 5662), (3278, 5510), (4180, 4321)]