21264800

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1399}}^1$

素因数の和:1438

約数の個数: 72

約数和(自身を含む): 54684000

約数和(自身を除く): 33419200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 152, 160, 190, 200, 304, 380, 400, 475, 608, 760, 800, 950, 1399, 1520, 1900, 2798, 3040, 3800, 5596, 6995, 7600, 11192, 13990, 15200, 22384, 26581, 27980, 34975, 44768, 53162, 55960, 69950, 106324, 111920, 132905, 139900, 212648, 223840, 265810, 279800, 425296, 531620, 559600, 664525, 850592, 1063240, 1119200, 1329050, 2126480, 2658100, 4252960, 5316200, 10632400, 21264800]

約数ペア:

[(1, 21264800), (2, 10632400), (4, 5316200), (5, 4252960), (8, 2658100), (10, 2126480), (16, 1329050), (19, 1119200), (20, 1063240), (25, 850592), (32, 664525), (38, 559600), (40, 531620), (50, 425296), (76, 279800), (80, 265810), (95, 223840), (100, 212648), (152, 139900), (160, 132905), (190, 111920), (200, 106324), (304, 69950), (380, 55960), (400, 53162), (475, 44768), (608, 34975), (760, 27980), (800, 26581), (950, 22384), (1399, 15200), (1520, 13990), (1900, 11192), (2798, 7600), (3040, 6995), (3800, 5596)]