21196910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{239}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 23618770

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 181, 239, 245, 362, 478, 490, 905, 1195, 1267, 1673, 1810, 2390, 2534, 3346, 6335, 8365, 8869, 11711, 12670, 16730, 17738, 23422, 43259, 44345, 58555, 86518, 88690, 117110, 216295, 302813, 432590, 605626, 1514065, 2119691, 3028130, 4239382, 10598455, 21196910]

約数ペア:

[(1, 21196910), (2, 10598455), (5, 4239382), (7, 3028130), (10, 2119691), (14, 1514065), (35, 605626), (49, 432590), (70, 302813), (98, 216295), (181, 117110), (239, 88690), (245, 86518), (362, 58555), (478, 44345), (490, 43259), (905, 23422), (1195, 17738), (1267, 16730), (1673, 12670), (1810, 11711), (2390, 8869), (2534, 8365), (3346, 6335)]