21139830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7577}}^1$

素因数の和:7621

約数の個数: 48

約数和(自身を含む): 56744064

約数和(自身を除く): 35604234

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7577, 15154, 22731, 37885, 45462, 68193, 75770, 113655, 136386, 227310, 234887, 340965, 469774, 681930, 704661, 1174435, 1409322, 2113983, 2348870, 3523305, 4227966, 7046610, 10569915, 21139830]

約数ペア:

[(1, 21139830), (2, 10569915), (3, 7046610), (5, 4227966), (6, 3523305), (9, 2348870), (10, 2113983), (15, 1409322), (18, 1174435), (30, 704661), (31, 681930), (45, 469774), (62, 340965), (90, 234887), (93, 227310), (155, 136386), (186, 113655), (279, 75770), (310, 68193), (465, 45462), (558, 37885), (930, 22731), (1395, 15154), (2790, 7577)]