18968900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 44163840

約数和(自身を除く): 25194940

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 31, 50, 58, 62, 100, 116, 124, 145, 155, 211, 290, 310, 422, 580, 620, 725, 775, 844, 899, 1055, 1450, 1550, 1798, 2110, 2900, 3100, 3596, 4220, 4495, 5275, 6119, 6541, 8990, 10550, 12238, 13082, 17980, 21100, 22475, 24476, 26164, 30595, 32705, 44950, 61190, 65410, 89900, 122380, 130820, 152975, 163525, 189689, 305950, 327050, 379378, 611900, 654100, 758756, 948445, 1896890, 3793780, 4742225, 9484450, 18968900]

約数ペア:

[(1, 18968900), (2, 9484450), (4, 4742225), (5, 3793780), (10, 1896890), (20, 948445), (25, 758756), (29, 654100), (31, 611900), (50, 379378), (58, 327050), (62, 305950), (100, 189689), (116, 163525), (124, 152975), (145, 130820), (155, 122380), (211, 89900), (290, 65410), (310, 61190), (422, 44950), (580, 32705), (620, 30595), (725, 26164), (775, 24476), (844, 22475), (899, 21100), (1055, 17980), (1450, 13082), (1550, 12238), (1798, 10550), (2110, 8990), (2900, 6541), (3100, 6119), (3596, 5275), (4220, 4495)]