19749080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{233}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 48353760

約数和(自身を除く): 28604680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 163, 233, 260, 326, 466, 520, 652, 815, 932, 1165, 1304, 1630, 1864, 2119, 2330, 3029, 3260, 4238, 4660, 6058, 6520, 8476, 9320, 10595, 12116, 15145, 16952, 21190, 24232, 30290, 37979, 42380, 60580, 75958, 84760, 121160, 151916, 189895, 303832, 379790, 493727, 759580, 987454, 1519160, 1974908, 2468635, 3949816, 4937270, 9874540, 19749080]

約数ペア:

[(1, 19749080), (2, 9874540), (4, 4937270), (5, 3949816), (8, 2468635), (10, 1974908), (13, 1519160), (20, 987454), (26, 759580), (40, 493727), (52, 379790), (65, 303832), (104, 189895), (130, 151916), (163, 121160), (233, 84760), (260, 75958), (326, 60580), (466, 42380), (520, 37979), (652, 30290), (815, 24232), (932, 21190), (1165, 16952), (1304, 15145), (1630, 12116), (1864, 10595), (2119, 9320), (2330, 8476), (3029, 6520), (3260, 6058), (4238, 4660)]