18990930

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{12919}}^1$

素因数の和:12943

約数の個数: 48

約数和(自身を含む): 53023680

約数和(自身を除く): 34032750

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 12919, 25838, 38757, 64595, 77514, 90433, 129190, 180866, 193785, 271299, 387570, 452165, 542598, 633031, 904330, 1266062, 1356495, 1899093, 2712990, 3165155, 3798186, 6330310, 9495465, 18990930]

約数ペア:

[(1, 18990930), (2, 9495465), (3, 6330310), (5, 3798186), (6, 3165155), (7, 2712990), (10, 1899093), (14, 1356495), (15, 1266062), (21, 904330), (30, 633031), (35, 542598), (42, 452165), (49, 387570), (70, 271299), (98, 193785), (105, 180866), (147, 129190), (210, 90433), (245, 77514), (294, 64595), (490, 38757), (735, 25838), (1470, 12919)]