19985454

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:227

約数の個数: 80

約数和(自身を含む): 48554880

約数和(自身を除く): 28569426

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 43, 54, 57, 81, 86, 114, 129, 151, 162, 171, 258, 302, 342, 387, 453, 513, 774, 817, 906, 1026, 1161, 1359, 1539, 1634, 2322, 2451, 2718, 2869, 3078, 3483, 4077, 4902, 5738, 6493, 6966, 7353, 8154, 8607, 12231, 12986, 14706, 17214, 19479, 22059, 24462, 25821, 38958, 44118, 51642, 58437, 66177, 77463, 116874, 123367, 132354, 154926, 175311, 232389, 246734, 350622, 370101, 464778, 525933, 740202, 1051866, 1110303, 2220606, 3330909, 6661818, 9992727, 19985454]

約数ペア:

[(1, 19985454), (2, 9992727), (3, 6661818), (6, 3330909), (9, 2220606), (18, 1110303), (19, 1051866), (27, 740202), (38, 525933), (43, 464778), (54, 370101), (57, 350622), (81, 246734), (86, 232389), (114, 175311), (129, 154926), (151, 132354), (162, 123367), (171, 116874), (258, 77463), (302, 66177), (342, 58437), (387, 51642), (453, 44118), (513, 38958), (774, 25821), (817, 24462), (906, 22059), (1026, 19479), (1161, 17214), (1359, 14706), (1539, 12986), (1634, 12231), (2322, 8607), (2451, 8154), (2718, 7353), (2869, 6966), (3078, 6493), (3483, 5738), (4077, 4902)]