20003000

素因数分解:

$2^3\times 5^3\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 47567520

約数和(自身を除く): 27564520

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 83, 100, 125, 166, 200, 241, 250, 332, 415, 482, 500, 664, 830, 964, 1000, 1205, 1660, 1928, 2075, 2410, 3320, 4150, 4820, 6025, 8300, 9640, 10375, 12050, 16600, 20003, 20750, 24100, 30125, 40006, 41500, 48200, 60250, 80012, 83000, 100015, 120500, 160024, 200030, 241000, 400060, 500075, 800120, 1000150, 2000300, 2500375, 4000600, 5000750, 10001500, 20003000]

約数ペア:

[(1, 20003000), (2, 10001500), (4, 5000750), (5, 4000600), (8, 2500375), (10, 2000300), (20, 1000150), (25, 800120), (40, 500075), (50, 400060), (83, 241000), (100, 200030), (125, 160024), (166, 120500), (200, 100015), (241, 83000), (250, 80012), (332, 60250), (415, 48200), (482, 41500), (500, 40006), (664, 30125), (830, 24100), (964, 20750), (1000, 20003), (1205, 16600), (1660, 12050), (1928, 10375), (2075, 9640), (2410, 8300), (3320, 6025), (4150, 4820)]