8640760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 20956320

約数和(自身を除く): 12315560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 97, 131, 136, 170, 194, 262, 340, 388, 485, 524, 655, 680, 776, 970, 1048, 1310, 1649, 1940, 2227, 2620, 3298, 3880, 4454, 5240, 6596, 8245, 8908, 11135, 12707, 13192, 16490, 17816, 22270, 25414, 32980, 44540, 50828, 63535, 65960, 89080, 101656, 127070, 216019, 254140, 432038, 508280, 864076, 1080095, 1728152, 2160190, 4320380, 8640760]

約数ペア:

[(1, 8640760), (2, 4320380), (4, 2160190), (5, 1728152), (8, 1080095), (10, 864076), (17, 508280), (20, 432038), (34, 254140), (40, 216019), (68, 127070), (85, 101656), (97, 89080), (131, 65960), (136, 63535), (170, 50828), (194, 44540), (262, 32980), (340, 25414), (388, 22270), (485, 17816), (524, 16490), (655, 13192), (680, 12707), (776, 11135), (970, 8908), (1048, 8245), (1310, 6596), (1649, 5240), (1940, 4454), (2227, 3880), (2620, 3298)]