21126644

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 27136396

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 41, 44, 49, 77, 82, 98, 154, 164, 196, 239, 287, 308, 451, 478, 539, 574, 902, 956, 1078, 1148, 1673, 1804, 2009, 2156, 2629, 3157, 3346, 4018, 5258, 6314, 6692, 8036, 9799, 10516, 11711, 12628, 18403, 19598, 22099, 23422, 36806, 39196, 44198, 46844, 68593, 73612, 88396, 107789, 128821, 137186, 215578, 257642, 274372, 431156, 480151, 515284, 754523, 960302, 1509046, 1920604, 3018092, 5281661, 10563322, 21126644]

約数ペア:

[(1, 21126644), (2, 10563322), (4, 5281661), (7, 3018092), (11, 1920604), (14, 1509046), (22, 960302), (28, 754523), (41, 515284), (44, 480151), (49, 431156), (77, 274372), (82, 257642), (98, 215578), (154, 137186), (164, 128821), (196, 107789), (239, 88396), (287, 73612), (308, 68593), (451, 46844), (478, 44198), (539, 39196), (574, 36806), (902, 23422), (956, 22099), (1078, 19598), (1148, 18403), (1673, 12628), (1804, 11711), (2009, 10516), (2156, 9799), (2629, 8036), (3157, 6692), (3346, 6314), (4018, 5258)]