80388620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16273}}^1$

素因数の和:16314

約数の個数: 48

約数和(自身を含む): 191382240

約数和(自身を除く): 110993620

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 16273, 32546, 65092, 81365, 162730, 211549, 309187, 325460, 423098, 618374, 846196, 1057745, 1236748, 1545935, 2115490, 3091870, 4019431, 4230980, 6183740, 8038862, 16077724, 20097155, 40194310, 80388620]

約数ペア:

[(1, 80388620), (2, 40194310), (4, 20097155), (5, 16077724), (10, 8038862), (13, 6183740), (19, 4230980), (20, 4019431), (26, 3091870), (38, 2115490), (52, 1545935), (65, 1236748), (76, 1057745), (95, 846196), (130, 618374), (190, 423098), (247, 325460), (260, 309187), (380, 211549), (494, 162730), (988, 81365), (1235, 65092), (2470, 32546), (4940, 16273)]