19703390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:609

約数の個数: 48

約数和(自身を含む): 41860800

約数和(自身を除く): 22157410

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 79, 98, 158, 245, 395, 490, 509, 553, 790, 1018, 1106, 2545, 2765, 3563, 3871, 5090, 5530, 7126, 7742, 17815, 19355, 24941, 35630, 38710, 40211, 49882, 80422, 124705, 201055, 249410, 281477, 402110, 562954, 1407385, 1970339, 2814770, 3940678, 9851695, 19703390]

約数ペア:

[(1, 19703390), (2, 9851695), (5, 3940678), (7, 2814770), (10, 1970339), (14, 1407385), (35, 562954), (49, 402110), (70, 281477), (79, 249410), (98, 201055), (158, 124705), (245, 80422), (395, 49882), (490, 40211), (509, 38710), (553, 35630), (790, 24941), (1018, 19355), (1106, 17815), (2545, 7742), (2765, 7126), (3563, 5530), (3871, 5090)]