198716975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 267125760

約数和(自身を除く): 68408785

約数列:

[1, 5, 25, 31, 43, 67, 89, 155, 215, 335, 445, 775, 1075, 1333, 1675, 2077, 2225, 2759, 2881, 3827, 5963, 6665, 10385, 13795, 14405, 19135, 29815, 33325, 51925, 68975, 72025, 89311, 95675, 118637, 149075, 184853, 256409, 446555, 593185, 924265, 1282045, 2232775, 2965925, 4621325, 6410225, 7948679, 39743395, 198716975]

約数ペア:

[(1, 198716975), (5, 39743395), (25, 7948679), (31, 6410225), (43, 4621325), (67, 2965925), (89, 2232775), (155, 1282045), (215, 924265), (335, 593185), (445, 446555), (775, 256409), (1075, 184853), (1333, 149075), (1675, 118637), (2077, 95675), (2225, 89311), (2759, 72025), (2881, 68975), (3827, 51925), (5963, 33325), (6665, 29815), (10385, 19135), (13795, 14405)]