20823147568

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{281}}^1\times {\mathrm{1361}}^1$

素因数の和:1774

約数の個数: 80

約数和(自身を含む): 42006498912

約数和(自身を除く): 21183351344

約数列:

[1, 2, 4, 8, 16, 41, 82, 83, 164, 166, 281, 328, 332, 562, 656, 664, 1124, 1328, 1361, 2248, 2722, 3403, 4496, 5444, 6806, 10888, 11521, 13612, 21776, 23042, 23323, 27224, 46084, 46646, 54448, 55801, 92168, 93292, 111602, 112963, 184336, 186584, 223204, 225926, 373168, 382441, 446408, 451852, 764882, 892816, 903704, 956243, 1529764, 1807408, 1912486, 3059528, 3824972, 4631483, 6119056, 7649944, 9262966, 15299888, 15680081, 18525932, 31360162, 31742603, 37051864, 62720324, 63485206, 74103728, 125440648, 126970412, 250881296, 253940824, 507881648, 1301446723, 2602893446, 5205786892, 10411573784, 20823147568]

約数ペア:

[(1, 20823147568), (2, 10411573784), (4, 5205786892), (8, 2602893446), (16, 1301446723), (41, 507881648), (82, 253940824), (83, 250881296), (164, 126970412), (166, 125440648), (281, 74103728), (328, 63485206), (332, 62720324), (562, 37051864), (656, 31742603), (664, 31360162), (1124, 18525932), (1328, 15680081), (1361, 15299888), (2248, 9262966), (2722, 7649944), (3403, 6119056), (4496, 4631483), (5444, 3824972), (6806, 3059528), (10888, 1912486), (11521, 1807408), (13612, 1529764), (21776, 956243), (23042, 903704), (23323, 892816), (27224, 764882), (46084, 451852), (46646, 446408), (54448, 382441), (55801, 373168), (92168, 225926), (93292, 223204), (111602, 186584), (112963, 184336)]