18742880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9011}}^1$

素因数の和:9039

約数の個数: 48

約数和(自身を含む): 47691504

約数和(自身を除く): 28948624

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9011, 18022, 36044, 45055, 72088, 90110, 117143, 144176, 180220, 234286, 288352, 360440, 468572, 585715, 720880, 937144, 1171430, 1441760, 1874288, 2342860, 3748576, 4685720, 9371440, 18742880]

約数ペア:

[(1, 18742880), (2, 9371440), (4, 4685720), (5, 3748576), (8, 2342860), (10, 1874288), (13, 1441760), (16, 1171430), (20, 937144), (26, 720880), (32, 585715), (40, 468572), (52, 360440), (65, 288352), (80, 234286), (104, 180220), (130, 144176), (160, 117143), (208, 90110), (260, 72088), (416, 45055), (520, 36044), (1040, 18022), (2080, 9011)]