21373670

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 43476480

約数和(自身を除く): 22102810

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 67, 73, 95, 115, 134, 146, 190, 230, 335, 365, 437, 670, 730, 874, 1273, 1387, 1541, 1679, 2185, 2546, 2774, 3082, 3358, 4370, 4891, 6365, 6935, 7705, 8395, 9782, 12730, 13870, 15410, 16790, 24455, 29279, 31901, 48910, 58558, 63802, 92929, 112493, 146395, 159505, 185858, 224986, 292790, 319010, 464645, 562465, 929290, 1124930, 2137367, 4274734, 10686835, 21373670]

約数ペア:

[(1, 21373670), (2, 10686835), (5, 4274734), (10, 2137367), (19, 1124930), (23, 929290), (38, 562465), (46, 464645), (67, 319010), (73, 292790), (95, 224986), (115, 185858), (134, 159505), (146, 146395), (190, 112493), (230, 92929), (335, 63802), (365, 58558), (437, 48910), (670, 31901), (730, 29279), (874, 24455), (1273, 16790), (1387, 15410), (1541, 13870), (1679, 12730), (2185, 9782), (2546, 8395), (2774, 7705), (3082, 6935), (3358, 6365), (4370, 4891)]