9998440

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1381}}^1$

素因数の和:1573

約数の個数: 32

約数和(自身を含む): 22637160

約数和(自身を除く): 12638720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1381, 1448, 1810, 2762, 3620, 5524, 6905, 7240, 11048, 13810, 27620, 55240, 249961, 499922, 999844, 1249805, 1999688, 2499610, 4999220, 9998440]

約数ペア:

[(1, 9998440), (2, 4999220), (4, 2499610), (5, 1999688), (8, 1249805), (10, 999844), (20, 499922), (40, 249961), (181, 55240), (362, 27620), (724, 13810), (905, 11048), (1381, 7240), (1448, 6905), (1810, 5524), (2762, 3620)]