128788880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4721}}^1$

素因数の和:4776

約数の個数: 80

約数和(自身を含む): 337264128

約数和(自身を除く): 208475248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 880, 1240, 1364, 1705, 2480, 2728, 3410, 4721, 5456, 6820, 9442, 13640, 18884, 23605, 27280, 37768, 47210, 51931, 75536, 94420, 103862, 146351, 188840, 207724, 259655, 292702, 377680, 415448, 519310, 585404, 731755, 830896, 1038620, 1170808, 1463510, 1609861, 2077240, 2341616, 2927020, 3219722, 4154480, 5854040, 6439444, 8049305, 11708080, 12878888, 16098610, 25757776, 32197220, 64394440, 128788880]

約数ペア:

[(1, 128788880), (2, 64394440), (4, 32197220), (5, 25757776), (8, 16098610), (10, 12878888), (11, 11708080), (16, 8049305), (20, 6439444), (22, 5854040), (31, 4154480), (40, 3219722), (44, 2927020), (55, 2341616), (62, 2077240), (80, 1609861), (88, 1463510), (110, 1170808), (124, 1038620), (155, 830896), (176, 731755), (220, 585404), (248, 519310), (310, 415448), (341, 377680), (440, 292702), (496, 259655), (620, 207724), (682, 188840), (880, 146351), (1240, 103862), (1364, 94420), (1705, 75536), (2480, 51931), (2728, 47210), (3410, 37768), (4721, 27280), (5456, 23605), (6820, 18884), (9442, 13640)]