21041090

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1867}}^1$

素因数の和:1911

約数の個数: 48

約数和(自身を含む): 45997632

約数和(自身を除く): 24956542

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 98, 115, 161, 230, 245, 322, 490, 805, 1127, 1610, 1867, 2254, 3734, 5635, 9335, 11270, 13069, 18670, 26138, 42941, 65345, 85882, 91483, 130690, 182966, 214705, 300587, 429410, 457415, 601174, 914830, 1502935, 2104109, 3005870, 4208218, 10520545, 21041090]

約数ペア:

[(1, 21041090), (2, 10520545), (5, 4208218), (7, 3005870), (10, 2104109), (14, 1502935), (23, 914830), (35, 601174), (46, 457415), (49, 429410), (70, 300587), (98, 214705), (115, 182966), (161, 130690), (230, 91483), (245, 85882), (322, 65345), (490, 42941), (805, 26138), (1127, 18670), (1610, 13069), (1867, 11270), (2254, 9335), (3734, 5635)]