19258720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 96

約数和(自身を含む): 50295168

約数和(自身を除く): 31036448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 65, 80, 94, 104, 130, 160, 188, 197, 208, 235, 260, 376, 394, 416, 470, 520, 611, 752, 788, 940, 985, 1040, 1222, 1504, 1576, 1880, 1970, 2080, 2444, 2561, 3055, 3152, 3760, 3940, 4888, 5122, 6110, 6304, 7520, 7880, 9259, 9776, 10244, 12220, 12805, 15760, 18518, 19552, 20488, 24440, 25610, 31520, 37036, 40976, 46295, 48880, 51220, 74072, 81952, 92590, 97760, 102440, 120367, 148144, 185180, 204880, 240734, 296288, 370360, 409760, 481468, 601835, 740720, 962936, 1203670, 1481440, 1925872, 2407340, 3851744, 4814680, 9629360, 19258720]

約数ペア:

[(1, 19258720), (2, 9629360), (4, 4814680), (5, 3851744), (8, 2407340), (10, 1925872), (13, 1481440), (16, 1203670), (20, 962936), (26, 740720), (32, 601835), (40, 481468), (47, 409760), (52, 370360), (65, 296288), (80, 240734), (94, 204880), (104, 185180), (130, 148144), (160, 120367), (188, 102440), (197, 97760), (208, 92590), (235, 81952), (260, 74072), (376, 51220), (394, 48880), (416, 46295), (470, 40976), (520, 37036), (611, 31520), (752, 25610), (788, 24440), (940, 20488), (985, 19552), (1040, 18518), (1222, 15760), (1504, 12805), (1576, 12220), (1880, 10244), (1970, 9776), (2080, 9259), (2444, 7880), (2561, 7520), (3055, 6304), (3152, 6110), (3760, 5122), (3940, 4888)]