21811290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{499}}^1$

素因数の和:587

約数の個数: 64

約数和(自身を含む): 55296000

約数和(自身を除く): 33484710

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 47, 62, 93, 94, 141, 155, 186, 235, 282, 310, 465, 470, 499, 705, 930, 998, 1410, 1457, 1497, 2495, 2914, 2994, 4371, 4990, 7285, 7485, 8742, 14570, 14970, 15469, 21855, 23453, 30938, 43710, 46407, 46906, 70359, 77345, 92814, 117265, 140718, 154690, 232035, 234530, 351795, 464070, 703590, 727043, 1454086, 2181129, 3635215, 4362258, 7270430, 10905645, 21811290]

約数ペア:

[(1, 21811290), (2, 10905645), (3, 7270430), (5, 4362258), (6, 3635215), (10, 2181129), (15, 1454086), (30, 727043), (31, 703590), (47, 464070), (62, 351795), (93, 234530), (94, 232035), (141, 154690), (155, 140718), (186, 117265), (235, 92814), (282, 77345), (310, 70359), (465, 46906), (470, 46407), (499, 43710), (705, 30938), (930, 23453), (998, 21855), (1410, 15469), (1457, 14970), (1497, 14570), (2495, 8742), (2914, 7485), (2994, 7285), (4371, 4990)]