663558145

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 838524960

約数和(自身を除く): 174966815

約数列:

[1, 5, 41, 53, 157, 205, 265, 389, 785, 1945, 2173, 6437, 8321, 10865, 15949, 20617, 32185, 41605, 61073, 79745, 103085, 305365, 341161, 845297, 1705805, 2503993, 3236869, 4226485, 12519965, 16184345, 132711629, 663558145]

約数ペア:

[(1, 663558145), (5, 132711629), (41, 16184345), (53, 12519965), (157, 4226485), (205, 3236869), (265, 2503993), (389, 1705805), (785, 845297), (1945, 341161), (2173, 305365), (6437, 103085), (8321, 79745), (10865, 61073), (15949, 41605), (20617, 32185)]