128545640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2141}}^1$

素因数の和:2250

約数の個数: 64

約数和(自身を含む): 308448000

約数和(自身を除く): 179902360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 79, 95, 152, 158, 190, 316, 380, 395, 632, 760, 790, 1501, 1580, 2141, 3002, 3160, 4282, 6004, 7505, 8564, 10705, 12008, 15010, 17128, 21410, 30020, 40679, 42820, 60040, 81358, 85640, 162716, 169139, 203395, 325432, 338278, 406790, 676556, 813580, 845695, 1353112, 1627160, 1691390, 3213641, 3382780, 6427282, 6765560, 12854564, 16068205, 25709128, 32136410, 64272820, 128545640]

約数ペア:

[(1, 128545640), (2, 64272820), (4, 32136410), (5, 25709128), (8, 16068205), (10, 12854564), (19, 6765560), (20, 6427282), (38, 3382780), (40, 3213641), (76, 1691390), (79, 1627160), (95, 1353112), (152, 845695), (158, 813580), (190, 676556), (316, 406790), (380, 338278), (395, 325432), (632, 203395), (760, 169139), (790, 162716), (1501, 85640), (1580, 81358), (2141, 60040), (3002, 42820), (3160, 40679), (4282, 30020), (6004, 21410), (7505, 17128), (8564, 15010), (10705, 12008)]