21263770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 45069696

約数和(自身を除く): 23805926

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 83, 85, 110, 137, 166, 170, 187, 274, 374, 415, 685, 830, 913, 935, 1370, 1411, 1507, 1826, 1870, 2329, 2822, 3014, 4565, 4658, 7055, 7535, 9130, 11371, 11645, 14110, 15070, 15521, 22742, 23290, 25619, 31042, 51238, 56855, 77605, 113710, 125081, 128095, 155210, 193307, 250162, 256190, 386614, 625405, 966535, 1250810, 1933070, 2126377, 4252754, 10631885, 21263770]

約数ペア:

[(1, 21263770), (2, 10631885), (5, 4252754), (10, 2126377), (11, 1933070), (17, 1250810), (22, 966535), (34, 625405), (55, 386614), (83, 256190), (85, 250162), (110, 193307), (137, 155210), (166, 128095), (170, 125081), (187, 113710), (274, 77605), (374, 56855), (415, 51238), (685, 31042), (830, 25619), (913, 23290), (935, 22742), (1370, 15521), (1411, 15070), (1507, 14110), (1826, 11645), (1870, 11371), (2329, 9130), (2822, 7535), (3014, 7055), (4565, 4658)]