20039812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 39760560

約数和(自身を除く): 19720748

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 97, 116, 137, 194, 274, 377, 388, 548, 754, 1261, 1508, 1781, 2522, 2813, 3562, 3973, 5044, 5626, 7124, 7946, 11252, 13289, 15892, 26578, 36569, 51649, 53156, 73138, 103298, 146276, 172757, 206596, 345514, 385381, 691028, 770762, 1541524, 5009953, 10019906, 20039812]

約数ペア:

[(1, 20039812), (2, 10019906), (4, 5009953), (13, 1541524), (26, 770762), (29, 691028), (52, 385381), (58, 345514), (97, 206596), (116, 172757), (137, 146276), (194, 103298), (274, 73138), (377, 53156), (388, 51649), (548, 36569), (754, 26578), (1261, 15892), (1508, 13289), (1781, 11252), (2522, 7946), (2813, 7124), (3562, 5626), (3973, 5044)]