21146180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{347}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 48758976

約数和(自身を除く): 27612796

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 277, 347, 554, 694, 1108, 1385, 1388, 1735, 2770, 3047, 3470, 3817, 5540, 6094, 6940, 7634, 12188, 15235, 15268, 19085, 30470, 38170, 60940, 76340, 96119, 192238, 384476, 480595, 961190, 1057309, 1922380, 2114618, 4229236, 5286545, 10573090, 21146180]

約数ペア:

[(1, 21146180), (2, 10573090), (4, 5286545), (5, 4229236), (10, 2114618), (11, 1922380), (20, 1057309), (22, 961190), (44, 480595), (55, 384476), (110, 192238), (220, 96119), (277, 76340), (347, 60940), (554, 38170), (694, 30470), (1108, 19085), (1385, 15268), (1388, 15235), (1735, 12188), (2770, 7634), (3047, 6940), (3470, 6094), (3817, 5540)]