20012415

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 16482945

約数列:

[1, 3, 5, 15, 19, 23, 43, 57, 69, 71, 95, 115, 129, 213, 215, 285, 345, 355, 437, 645, 817, 989, 1065, 1311, 1349, 1633, 2185, 2451, 2967, 3053, 4047, 4085, 4899, 4945, 6555, 6745, 8165, 9159, 12255, 14835, 15265, 18791, 20235, 24495, 31027, 45795, 56373, 58007, 70219, 93081, 93955, 155135, 174021, 210657, 281865, 290035, 351095, 465405, 870105, 1053285, 1334161, 4002483, 6670805, 20012415]

約数ペア:

[(1, 20012415), (3, 6670805), (5, 4002483), (15, 1334161), (19, 1053285), (23, 870105), (43, 465405), (57, 351095), (69, 290035), (71, 281865), (95, 210657), (115, 174021), (129, 155135), (213, 93955), (215, 93081), (285, 70219), (345, 58007), (355, 56373), (437, 45795), (645, 31027), (817, 24495), (989, 20235), (1065, 18791), (1311, 15265), (1349, 14835), (1633, 12255), (2185, 9159), (2451, 8165), (2967, 6745), (3053, 6555), (4047, 4945), (4085, 4899)]