68813460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{887}}^1$

素因数の和:1333

約数の個数: 72

約数和(自身を含む): 209454336

約数和(自身を除く): 140640876

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 431, 862, 887, 1293, 1724, 1774, 2155, 2586, 2661, 3548, 3879, 4310, 4435, 5172, 5322, 6465, 7758, 7983, 8620, 8870, 10644, 12930, 13305, 15516, 15966, 17740, 19395, 25860, 26610, 31932, 38790, 39915, 53220, 77580, 79830, 159660, 382297, 764594, 1146891, 1529188, 1911485, 2293782, 3440673, 3822970, 4587564, 5734455, 6881346, 7645940, 11468910, 13762692, 17203365, 22937820, 34406730, 68813460]

約数ペア:

[(1, 68813460), (2, 34406730), (3, 22937820), (4, 17203365), (5, 13762692), (6, 11468910), (9, 7645940), (10, 6881346), (12, 5734455), (15, 4587564), (18, 3822970), (20, 3440673), (30, 2293782), (36, 1911485), (45, 1529188), (60, 1146891), (90, 764594), (180, 382297), (431, 159660), (862, 79830), (887, 77580), (1293, 53220), (1724, 39915), (1774, 38790), (2155, 31932), (2586, 26610), (2661, 25860), (3548, 19395), (3879, 17740), (4310, 15966), (4435, 15516), (5172, 13305), (5322, 12930), (6465, 10644), (7758, 8870), (7983, 8620)]