80239460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1997}}^1$

素因数の和:2061

約数の個数: 72

約数和(自身を含む): 200894904

約数和(自身を除く): 120655444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1435, 1997, 2009, 2870, 3994, 4018, 5740, 7988, 8036, 9985, 10045, 13979, 19970, 20090, 27958, 39940, 40180, 55916, 69895, 81877, 97853, 139790, 163754, 195706, 279580, 327508, 391412, 409385, 489265, 573139, 818770, 978530, 1146278, 1637540, 1957060, 2292556, 2865695, 4011973, 5731390, 8023946, 11462780, 16047892, 20059865, 40119730, 80239460]

約数ペア:

[(1, 80239460), (2, 40119730), (4, 20059865), (5, 16047892), (7, 11462780), (10, 8023946), (14, 5731390), (20, 4011973), (28, 2865695), (35, 2292556), (41, 1957060), (49, 1637540), (70, 1146278), (82, 978530), (98, 818770), (140, 573139), (164, 489265), (196, 409385), (205, 391412), (245, 327508), (287, 279580), (410, 195706), (490, 163754), (574, 139790), (820, 97853), (980, 81877), (1148, 69895), (1435, 55916), (1997, 40180), (2009, 39940), (2870, 27958), (3994, 20090), (4018, 19970), (5740, 13979), (7988, 10045), (8036, 9985)]