647567990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{90823}}^1$

素因数の和:90884

約数の個数: 32

約数和(自身を含む): 1255550976

約数和(自身を除く): 607982986

約数列:

[1, 2, 5, 10, 23, 31, 46, 62, 115, 155, 230, 310, 713, 1426, 3565, 7130, 90823, 181646, 454115, 908230, 2088929, 2815513, 4177858, 5631026, 10444645, 14077565, 20889290, 28155130, 64756799, 129513598, 323783995, 647567990]

約数ペア:

[(1, 647567990), (2, 323783995), (5, 129513598), (10, 64756799), (23, 28155130), (31, 20889290), (46, 14077565), (62, 10444645), (115, 5631026), (155, 4177858), (230, 2815513), (310, 2088929), (713, 908230), (1426, 454115), (3565, 181646), (7130, 90823)]