204540100

素因数分解:

$2^2\times 5^2\times {\mathrm{499}}^1\times {\mathrm{4099}}^1$

素因数の和:4612

約数の個数: 36

約数和(自身を含む): 444850000

約数和(自身を除く): 240309900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 499, 998, 1996, 2495, 4099, 4990, 8198, 9980, 12475, 16396, 20495, 24950, 40990, 49900, 81980, 102475, 204950, 409900, 2045401, 4090802, 8181604, 10227005, 20454010, 40908020, 51135025, 102270050, 204540100]

約数ペア:

[(1, 204540100), (2, 102270050), (4, 51135025), (5, 40908020), (10, 20454010), (20, 10227005), (25, 8181604), (50, 4090802), (100, 2045401), (499, 409900), (998, 204950), (1996, 102475), (2495, 81980), (4099, 49900), (4990, 40990), (8198, 24950), (9980, 20495), (12475, 16396)]