21383330

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:658

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 19051870

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 239, 389, 478, 778, 1195, 1945, 2390, 3890, 5497, 8947, 10994, 17894, 27485, 44735, 54970, 89470, 92971, 185942, 464855, 929710, 2138333, 4276666, 10691665, 21383330]

約数ペア:

[(1, 21383330), (2, 10691665), (5, 4276666), (10, 2138333), (23, 929710), (46, 464855), (115, 185942), (230, 92971), (239, 89470), (389, 54970), (478, 44735), (778, 27485), (1195, 17894), (1945, 10994), (2390, 8947), (3890, 5497)]