19528880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:874

約数の個数: 80

約数和(自身を含む): 53163264

約数和(自身を除く): 33634384

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 811, 860, 1204, 1505, 1622, 1720, 2408, 3010, 3244, 3440, 4055, 4816, 5677, 6020, 6488, 8110, 11354, 12040, 12976, 16220, 22708, 24080, 28385, 32440, 34873, 45416, 56770, 64880, 69746, 90832, 113540, 139492, 174365, 227080, 244111, 278984, 348730, 454160, 488222, 557968, 697460, 976444, 1220555, 1394920, 1952888, 2441110, 2789840, 3905776, 4882220, 9764440, 19528880]

約数ペア:

[(1, 19528880), (2, 9764440), (4, 4882220), (5, 3905776), (7, 2789840), (8, 2441110), (10, 1952888), (14, 1394920), (16, 1220555), (20, 976444), (28, 697460), (35, 557968), (40, 488222), (43, 454160), (56, 348730), (70, 278984), (80, 244111), (86, 227080), (112, 174365), (140, 139492), (172, 113540), (215, 90832), (280, 69746), (301, 64880), (344, 56770), (430, 45416), (560, 34873), (602, 32440), (688, 28385), (811, 24080), (860, 22708), (1204, 16220), (1505, 12976), (1622, 12040), (1720, 11354), (2408, 8110), (3010, 6488), (3244, 6020), (3440, 5677), (4055, 4816)]