21361690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:679

約数の個数: 64

約数和(自身を含む): 48211200

約数和(自身を除く): 26849510

約数列:

[1, 2, 5, 7, 10, 14, 17, 29, 34, 35, 58, 70, 85, 119, 145, 170, 203, 238, 290, 406, 493, 595, 619, 986, 1015, 1190, 1238, 2030, 2465, 3095, 3451, 4333, 4930, 6190, 6902, 8666, 10523, 17255, 17951, 21046, 21665, 34510, 35902, 43330, 52615, 73661, 89755, 105230, 125657, 147322, 179510, 251314, 305167, 368305, 610334, 628285, 736610, 1256570, 1525835, 2136169, 3051670, 4272338, 10680845, 21361690]

約数ペア:

[(1, 21361690), (2, 10680845), (5, 4272338), (7, 3051670), (10, 2136169), (14, 1525835), (17, 1256570), (29, 736610), (34, 628285), (35, 610334), (58, 368305), (70, 305167), (85, 251314), (119, 179510), (145, 147322), (170, 125657), (203, 105230), (238, 89755), (290, 73661), (406, 52615), (493, 43330), (595, 35902), (619, 34510), (986, 21665), (1015, 21046), (1190, 17951), (1238, 17255), (2030, 10523), (2465, 8666), (3095, 6902), (3451, 6190), (4333, 4930)]