21091548

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{263}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 50916096

約数和(自身を除く): 29824548

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 123, 163, 164, 246, 263, 326, 489, 492, 526, 652, 789, 978, 1052, 1578, 1956, 3156, 6683, 10783, 13366, 20049, 21566, 26732, 32349, 40098, 42869, 43132, 64698, 80196, 85738, 128607, 129396, 171476, 257214, 514428, 1757629, 3515258, 5272887, 7030516, 10545774, 21091548]

約数ペア:

[(1, 21091548), (2, 10545774), (3, 7030516), (4, 5272887), (6, 3515258), (12, 1757629), (41, 514428), (82, 257214), (123, 171476), (163, 129396), (164, 128607), (246, 85738), (263, 80196), (326, 64698), (489, 43132), (492, 42869), (526, 40098), (652, 32349), (789, 26732), (978, 21566), (1052, 20049), (1578, 13366), (1956, 10783), (3156, 6683)]