20411215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 7789745

約数列:

[1, 5, 11, 29, 55, 67, 145, 191, 319, 335, 737, 955, 1595, 1943, 2101, 3685, 5539, 9715, 10505, 12797, 21373, 27695, 60929, 63985, 106865, 140767, 304645, 371113, 703835, 1855565, 4082243, 20411215]

約数ペア:

[(1, 20411215), (5, 4082243), (11, 1855565), (29, 703835), (55, 371113), (67, 304645), (145, 140767), (191, 106865), (319, 63985), (335, 60929), (737, 27695), (955, 21373), (1595, 12797), (1943, 10505), (2101, 9715), (3685, 5539)]