19840496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:250

約数の個数: 80

約数和(自身を含む): 45497088

約数和(自身を除く): 25656592

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 31, 34, 52, 62, 68, 104, 124, 136, 181, 208, 221, 248, 272, 362, 403, 442, 496, 527, 724, 806, 884, 1054, 1448, 1612, 1768, 2108, 2353, 2896, 3077, 3224, 3536, 4216, 4706, 5611, 6154, 6448, 6851, 8432, 9412, 11222, 12308, 13702, 18824, 22444, 24616, 27404, 37648, 40001, 44888, 49232, 54808, 72943, 80002, 89776, 95387, 109616, 145886, 160004, 190774, 291772, 320008, 381548, 583544, 640016, 763096, 1167088, 1240031, 1526192, 2480062, 4960124, 9920248, 19840496]

約数ペア:

[(1, 19840496), (2, 9920248), (4, 4960124), (8, 2480062), (13, 1526192), (16, 1240031), (17, 1167088), (26, 763096), (31, 640016), (34, 583544), (52, 381548), (62, 320008), (68, 291772), (104, 190774), (124, 160004), (136, 145886), (181, 109616), (208, 95387), (221, 89776), (248, 80002), (272, 72943), (362, 54808), (403, 49232), (442, 44888), (496, 40001), (527, 37648), (724, 27404), (806, 24616), (884, 22444), (1054, 18824), (1448, 13702), (1612, 12308), (1768, 11222), (2108, 9412), (2353, 8432), (2896, 6851), (3077, 6448), (3224, 6154), (3536, 5611), (4216, 4706)]