20021778

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1213}}^1$

素因数の和:1359

約数の個数: 48

約数和(自身を含む): 49997376

約数和(自身を除く): 29975598

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 131, 262, 393, 786, 917, 1179, 1213, 1834, 2358, 2426, 2751, 3639, 5502, 7278, 8253, 8491, 10917, 16506, 16982, 21834, 25473, 50946, 76419, 152838, 158903, 317806, 476709, 953418, 1112321, 1430127, 2224642, 2860254, 3336963, 6673926, 10010889, 20021778]

約数ペア:

[(1, 20021778), (2, 10010889), (3, 6673926), (6, 3336963), (7, 2860254), (9, 2224642), (14, 1430127), (18, 1112321), (21, 953418), (42, 476709), (63, 317806), (126, 158903), (131, 152838), (262, 76419), (393, 50946), (786, 25473), (917, 21834), (1179, 16982), (1213, 16506), (1834, 10917), (2358, 8491), (2426, 8253), (2751, 7278), (3639, 5502)]