21003702986

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1\times {\mathrm{78437}}^1$

素因数の和:79094

約数の個数: 32

約数和(自身を含む): 37228557312

約数和(自身を除く): 16224854326

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 617, 1234, 4319, 8638, 19127, 38254, 78437, 133889, 156874, 267778, 549059, 1098118, 2431547, 4863094, 17020829, 34041658, 48395629, 96791258, 338769403, 677538806, 1500264499, 3000528998, 10501851493, 21003702986]

約数ペア:

[(1, 21003702986), (2, 10501851493), (7, 3000528998), (14, 1500264499), (31, 677538806), (62, 338769403), (217, 96791258), (434, 48395629), (617, 34041658), (1234, 17020829), (4319, 4863094), (8638, 2431547), (19127, 1098118), (38254, 549059), (78437, 267778), (133889, 156874)]