20138440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1013}}^1$

素因数の和:1102

約数の個数: 64

約数和(自身を含む): 52565760

約数和(自身を除く): 32427320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1013, 1420, 1988, 2026, 2485, 2840, 3976, 4052, 4970, 5065, 7091, 8104, 9940, 10130, 14182, 19880, 20260, 28364, 35455, 40520, 56728, 70910, 71923, 141820, 143846, 283640, 287692, 359615, 503461, 575384, 719230, 1006922, 1438460, 2013844, 2517305, 2876920, 4027688, 5034610, 10069220, 20138440]

約数ペア:

[(1, 20138440), (2, 10069220), (4, 5034610), (5, 4027688), (7, 2876920), (8, 2517305), (10, 2013844), (14, 1438460), (20, 1006922), (28, 719230), (35, 575384), (40, 503461), (56, 359615), (70, 287692), (71, 283640), (140, 143846), (142, 141820), (280, 71923), (284, 70910), (355, 56728), (497, 40520), (568, 35455), (710, 28364), (994, 20260), (1013, 19880), (1420, 14182), (1988, 10130), (2026, 9940), (2485, 8104), (2840, 7091), (3976, 5065), (4052, 4970)]