81451970

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{354139}}^1$

素因数の和:354169

約数の個数: 16

約数和(自身を含む): 152988480

約数和(自身を除く): 71536510

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 354139, 708278, 1770695, 3541390, 8145197, 16290394, 40725985, 81451970]

約数ペア:

[(1, 81451970), (2, 40725985), (5, 16290394), (10, 8145197), (23, 3541390), (46, 1770695), (115, 708278), (230, 354139)]