19394960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1097}}^1$

素因数の和:1140

約数の個数: 80

約数和(自身を含む): 51465456

約数和(自身を除く): 32070496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1097, 1105, 1360, 1768, 2194, 2210, 3536, 4388, 4420, 5485, 8776, 8840, 10970, 14261, 17552, 17680, 18649, 21940, 28522, 37298, 43880, 57044, 71305, 74596, 87760, 93245, 114088, 142610, 149192, 186490, 228176, 242437, 285220, 298384, 372980, 484874, 570440, 745960, 969748, 1140880, 1212185, 1491920, 1939496, 2424370, 3878992, 4848740, 9697480, 19394960]

約数ペア:

[(1, 19394960), (2, 9697480), (4, 4848740), (5, 3878992), (8, 2424370), (10, 1939496), (13, 1491920), (16, 1212185), (17, 1140880), (20, 969748), (26, 745960), (34, 570440), (40, 484874), (52, 372980), (65, 298384), (68, 285220), (80, 242437), (85, 228176), (104, 186490), (130, 149192), (136, 142610), (170, 114088), (208, 93245), (221, 87760), (260, 74596), (272, 71305), (340, 57044), (442, 43880), (520, 37298), (680, 28522), (884, 21940), (1040, 18649), (1097, 17680), (1105, 17552), (1360, 14261), (1768, 10970), (2194, 8840), (2210, 8776), (3536, 5485), (4388, 4420)]