20910078

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{631}}^1$

素因数の和:909

約数の個数: 48

約数和(自身を含む): 52056576

約数和(自身を除く): 31146498

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 263, 526, 631, 789, 1262, 1578, 1841, 1893, 2367, 3682, 3786, 4417, 4734, 5523, 5679, 8834, 11046, 11358, 13251, 16569, 26502, 33138, 39753, 79506, 165953, 331906, 497859, 995718, 1161671, 1493577, 2323342, 2987154, 3485013, 6970026, 10455039, 20910078]

約数ペア:

[(1, 20910078), (2, 10455039), (3, 6970026), (6, 3485013), (7, 2987154), (9, 2323342), (14, 1493577), (18, 1161671), (21, 995718), (42, 497859), (63, 331906), (126, 165953), (263, 79506), (526, 39753), (631, 33138), (789, 26502), (1262, 16569), (1578, 13251), (1841, 11358), (1893, 11046), (2367, 8834), (3682, 5679), (3786, 5523), (4417, 4734)]