21900390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1499}}^1$

素因数の和:1996

約数の個数: 32

約数和(自身を含む): 52704000

約数和(自身を除く): 30803610

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 487, 974, 1461, 1499, 2435, 2922, 2998, 4497, 4870, 7305, 7495, 8994, 14610, 14990, 22485, 44970, 730013, 1460026, 2190039, 3650065, 4380078, 7300130, 10950195, 21900390]

約数ペア:

[(1, 21900390), (2, 10950195), (3, 7300130), (5, 4380078), (6, 3650065), (10, 2190039), (15, 1460026), (30, 730013), (487, 44970), (974, 22485), (1461, 14990), (1499, 14610), (2435, 8994), (2922, 7495), (2998, 7305), (4497, 4870)]