31009880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 79002000

約数和(自身を除く): 47992120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 121, 149, 172, 215, 220, 242, 298, 344, 430, 440, 473, 484, 596, 605, 745, 860, 946, 968, 1192, 1210, 1490, 1639, 1720, 1892, 2365, 2420, 2980, 3278, 3784, 4730, 4840, 5203, 5960, 6407, 6556, 8195, 9460, 10406, 12814, 13112, 16390, 18029, 18920, 20812, 25628, 26015, 32035, 32780, 36058, 41624, 51256, 52030, 64070, 65560, 70477, 72116, 90145, 104060, 128140, 140954, 144232, 180290, 208120, 256280, 281908, 352385, 360580, 563816, 704770, 721160, 775247, 1409540, 1550494, 2819080, 3100988, 3876235, 6201976, 7752470, 15504940, 31009880]

約数ペア:

[(1, 31009880), (2, 15504940), (4, 7752470), (5, 6201976), (8, 3876235), (10, 3100988), (11, 2819080), (20, 1550494), (22, 1409540), (40, 775247), (43, 721160), (44, 704770), (55, 563816), (86, 360580), (88, 352385), (110, 281908), (121, 256280), (149, 208120), (172, 180290), (215, 144232), (220, 140954), (242, 128140), (298, 104060), (344, 90145), (430, 72116), (440, 70477), (473, 65560), (484, 64070), (596, 52030), (605, 51256), (745, 41624), (860, 36058), (946, 32780), (968, 32035), (1192, 26015), (1210, 25628), (1490, 20812), (1639, 18920), (1720, 18029), (1892, 16390), (2365, 13112), (2420, 12814), (2980, 10406), (3278, 9460), (3784, 8195), (4730, 6556), (4840, 6407), (5203, 5960)]