20171996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1201}}^1$

素因数の和:1254

約数の個数: 48

約数和(自身を含む): 42406560

約数和(自身を除く): 22234564

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 68, 76, 221, 247, 323, 442, 494, 646, 884, 988, 1201, 1292, 2402, 4199, 4804, 8398, 15613, 16796, 20417, 22819, 31226, 40834, 45638, 62452, 81668, 91276, 265421, 296647, 387923, 530842, 593294, 775846, 1061684, 1186588, 1551692, 5042999, 10085998, 20171996]

約数ペア:

[(1, 20171996), (2, 10085998), (4, 5042999), (13, 1551692), (17, 1186588), (19, 1061684), (26, 775846), (34, 593294), (38, 530842), (52, 387923), (68, 296647), (76, 265421), (221, 91276), (247, 81668), (323, 62452), (442, 45638), (494, 40834), (646, 31226), (884, 22819), (988, 20417), (1201, 16796), (1292, 15613), (2402, 8398), (4199, 4804)]