1981070

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1$

素因数の和:345

約数の個数: 48

約数和(自身を含む): 4481568

約数和(自身を除く): 2500498

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 311, 455, 490, 622, 637, 910, 1274, 1555, 2177, 3110, 3185, 4043, 4354, 6370, 8086, 10885, 15239, 20215, 21770, 28301, 30478, 40430, 56602, 76195, 141505, 152390, 198107, 283010, 396214, 990535, 1981070]

約数ペア:

[(1, 1981070), (2, 990535), (5, 396214), (7, 283010), (10, 198107), (13, 152390), (14, 141505), (26, 76195), (35, 56602), (49, 40430), (65, 30478), (70, 28301), (91, 21770), (98, 20215), (130, 15239), (182, 10885), (245, 8086), (311, 6370), (455, 4354), (490, 4043), (622, 3185), (637, 3110), (910, 2177), (1274, 1555)]