18287220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43541}}^1$

素因数の和:43560

約数の個数: 48

約数和(自身を含む): 58520448

約数和(自身を除く): 40233228

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 43541, 87082, 130623, 174164, 217705, 261246, 304787, 435410, 522492, 609574, 653115, 870820, 914361, 1219148, 1306230, 1523935, 1828722, 2612460, 3047870, 3657444, 4571805, 6095740, 9143610, 18287220]

約数ペア:

[(1, 18287220), (2, 9143610), (3, 6095740), (4, 4571805), (5, 3657444), (6, 3047870), (7, 2612460), (10, 1828722), (12, 1523935), (14, 1306230), (15, 1219148), (20, 914361), (21, 870820), (28, 653115), (30, 609574), (35, 522492), (42, 435410), (60, 304787), (70, 261246), (84, 217705), (105, 174164), (140, 130623), (210, 87082), (420, 43541)]