639170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:434

約数の個数: 32

約数和(自身を含む): 1375488

約数和(自身を除く): 736318

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 397, 794, 805, 1610, 1985, 2779, 3970, 5558, 9131, 13895, 18262, 27790, 45655, 63917, 91310, 127834, 319585, 639170]

約数ペア:

[(1, 639170), (2, 319585), (5, 127834), (7, 91310), (10, 63917), (14, 45655), (23, 27790), (35, 18262), (46, 13895), (70, 9131), (115, 5558), (161, 3970), (230, 2779), (322, 1985), (397, 1610), (794, 805)]