391991900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^2\times {\mathrm{4079}}^1$

素因数の和:4155

約数の個数: 54

約数和(自身を含む): 879162480

約数和(自身を除く): 487170580

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 961, 1550, 1922, 3100, 3844, 4079, 4805, 8158, 9610, 16316, 19220, 20395, 24025, 40790, 48050, 81580, 96100, 101975, 126449, 203950, 252898, 407900, 505796, 632245, 1264490, 2528980, 3161225, 3919919, 6322450, 7839838, 12644900, 15679676, 19599595, 39199190, 78398380, 97997975, 195995950, 391991900]

約数ペア:

[(1, 391991900), (2, 195995950), (4, 97997975), (5, 78398380), (10, 39199190), (20, 19599595), (25, 15679676), (31, 12644900), (50, 7839838), (62, 6322450), (100, 3919919), (124, 3161225), (155, 2528980), (310, 1264490), (620, 632245), (775, 505796), (961, 407900), (1550, 252898), (1922, 203950), (3100, 126449), (3844, 101975), (4079, 96100), (4805, 81580), (8158, 48050), (9610, 40790), (16316, 24025), (19220, 20395)]