21457345390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2377}}^1\times {\mathrm{69439}}^1$

素因数の和:71836

約数の個数: 32

約数和(自身を含む): 41612336640

約数和(自身を除く): 20154991250

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 2377, 4754, 11885, 23770, 30901, 61802, 69439, 138878, 154505, 309010, 347195, 694390, 902707, 1805414, 4513535, 9027070, 165056503, 330113006, 825282515, 1650565030, 2145734539, 4291469078, 10728672695, 21457345390]

約数ペア:

[(1, 21457345390), (2, 10728672695), (5, 4291469078), (10, 2145734539), (13, 1650565030), (26, 825282515), (65, 330113006), (130, 165056503), (2377, 9027070), (4754, 4513535), (11885, 1805414), (23770, 902707), (30901, 694390), (61802, 347195), (69439, 309010), (138878, 154505)]