20804513480

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1879}}^1\times {\mathrm{2113}}^1$

素因数の和:4134

約数の個数: 64

約数和(自身を含む): 47214921600

約数和(自身を除く): 26410408120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 1879, 2113, 2620, 3758, 4226, 5240, 7516, 8452, 9395, 10565, 15032, 16904, 18790, 21130, 37580, 42260, 75160, 84520, 246149, 276803, 492298, 553606, 984596, 1107212, 1230745, 1384015, 1969192, 2214424, 2461490, 2768030, 3970327, 4922980, 5536060, 7940654, 9845960, 11072120, 15881308, 19851635, 31762616, 39703270, 79406540, 158813080, 520112837, 1040225674, 2080451348, 2600564185, 4160902696, 5201128370, 10402256740, 20804513480]

約数ペア:

[(1, 20804513480), (2, 10402256740), (4, 5201128370), (5, 4160902696), (8, 2600564185), (10, 2080451348), (20, 1040225674), (40, 520112837), (131, 158813080), (262, 79406540), (524, 39703270), (655, 31762616), (1048, 19851635), (1310, 15881308), (1879, 11072120), (2113, 9845960), (2620, 7940654), (3758, 5536060), (4226, 4922980), (5240, 3970327), (7516, 2768030), (8452, 2461490), (9395, 2214424), (10565, 1969192), (15032, 1384015), (16904, 1230745), (18790, 1107212), (21130, 984596), (37580, 553606), (42260, 492298), (75160, 276803), (84520, 246149)]