20030000

素因数分解:

$2^4\times 5^4\times {\mathrm{2003}}^1$

素因数の和:2031

約数の個数: 50

約数和(自身を含む): 48518844

約数和(自身を除く): 28488844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2003, 2500, 4006, 5000, 8012, 10000, 10015, 16024, 20030, 32048, 40060, 50075, 80120, 100150, 160240, 200300, 250375, 400600, 500750, 801200, 1001500, 1251875, 2003000, 2503750, 4006000, 5007500, 10015000, 20030000]

約数ペア:

[(1, 20030000), (2, 10015000), (4, 5007500), (5, 4006000), (8, 2503750), (10, 2003000), (16, 1251875), (20, 1001500), (25, 801200), (40, 500750), (50, 400600), (80, 250375), (100, 200300), (125, 160240), (200, 100150), (250, 80120), (400, 50075), (500, 40060), (625, 32048), (1000, 20030), (1250, 16024), (2000, 10015), (2003, 10000), (2500, 8012), (4006, 5000)]