7878340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 17385984

約数和(自身を除く): 9507644

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 97, 124, 131, 155, 194, 262, 310, 388, 485, 524, 620, 655, 970, 1310, 1940, 2620, 3007, 4061, 6014, 8122, 12028, 12707, 15035, 16244, 20305, 25414, 30070, 40610, 50828, 60140, 63535, 81220, 127070, 254140, 393917, 787834, 1575668, 1969585, 3939170, 7878340]

約数ペア:

[(1, 7878340), (2, 3939170), (4, 1969585), (5, 1575668), (10, 787834), (20, 393917), (31, 254140), (62, 127070), (97, 81220), (124, 63535), (131, 60140), (155, 50828), (194, 40610), (262, 30070), (310, 25414), (388, 20305), (485, 16244), (524, 15035), (620, 12707), (655, 12028), (970, 8122), (1310, 6014), (1940, 4061), (2620, 3007)]