21326940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1087}}^1$

素因数の和:1211

約数の個数: 72

約数和(自身を含む): 65345280

約数和(自身を除く): 44018340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1087, 1090, 1308, 1635, 1962, 2174, 2180, 3261, 3270, 3924, 4348, 4905, 5435, 6522, 6540, 9783, 9810, 10870, 13044, 16305, 19566, 19620, 21740, 32610, 39132, 48915, 65220, 97830, 118483, 195660, 236966, 355449, 473932, 592415, 710898, 1066347, 1184830, 1421796, 1777245, 2132694, 2369660, 3554490, 4265388, 5331735, 7108980, 10663470, 21326940]

約数ペア:

[(1, 21326940), (2, 10663470), (3, 7108980), (4, 5331735), (5, 4265388), (6, 3554490), (9, 2369660), (10, 2132694), (12, 1777245), (15, 1421796), (18, 1184830), (20, 1066347), (30, 710898), (36, 592415), (45, 473932), (60, 355449), (90, 236966), (109, 195660), (180, 118483), (218, 97830), (327, 65220), (436, 48915), (545, 39132), (654, 32610), (981, 21740), (1087, 19620), (1090, 19566), (1308, 16305), (1635, 13044), (1962, 10870), (2174, 9810), (2180, 9783), (3261, 6540), (3270, 6522), (3924, 5435), (4348, 4905)]