20506920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24413}}^1$

素因数の和:24434

約数の個数: 64

約数和(自身を含む): 70312320

約数和(自身を除く): 49805400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24413, 48826, 73239, 97652, 122065, 146478, 170891, 195304, 244130, 292956, 341782, 366195, 488260, 512673, 585912, 683564, 732390, 854455, 976520, 1025346, 1367128, 1464780, 1708910, 2050692, 2563365, 2929560, 3417820, 4101384, 5126730, 6835640, 10253460, 20506920]

約数ペア:

[(1, 20506920), (2, 10253460), (3, 6835640), (4, 5126730), (5, 4101384), (6, 3417820), (7, 2929560), (8, 2563365), (10, 2050692), (12, 1708910), (14, 1464780), (15, 1367128), (20, 1025346), (21, 976520), (24, 854455), (28, 732390), (30, 683564), (35, 585912), (40, 512673), (42, 488260), (56, 366195), (60, 341782), (70, 292956), (84, 244130), (105, 195304), (120, 170891), (140, 146478), (168, 122065), (210, 97652), (280, 73239), (420, 48826), (840, 24413)]