28756420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 76640256

約数和(自身を除く): 47883836

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 71, 77, 110, 140, 142, 154, 220, 263, 284, 308, 355, 385, 497, 526, 710, 770, 781, 994, 1052, 1315, 1420, 1540, 1562, 1841, 1988, 2485, 2630, 2893, 3124, 3682, 3905, 4970, 5260, 5467, 5786, 7364, 7810, 9205, 9940, 10934, 11572, 14465, 15620, 18410, 18673, 20251, 21868, 27335, 28930, 36820, 37346, 40502, 54670, 57860, 74692, 81004, 93365, 101255, 109340, 130711, 186730, 202510, 205403, 261422, 373460, 405020, 410806, 522844, 653555, 821612, 1027015, 1307110, 1437821, 2054030, 2614220, 2875642, 4108060, 5751284, 7189105, 14378210, 28756420]

約数ペア:

[(1, 28756420), (2, 14378210), (4, 7189105), (5, 5751284), (7, 4108060), (10, 2875642), (11, 2614220), (14, 2054030), (20, 1437821), (22, 1307110), (28, 1027015), (35, 821612), (44, 653555), (55, 522844), (70, 410806), (71, 405020), (77, 373460), (110, 261422), (140, 205403), (142, 202510), (154, 186730), (220, 130711), (263, 109340), (284, 101255), (308, 93365), (355, 81004), (385, 74692), (497, 57860), (526, 54670), (710, 40502), (770, 37346), (781, 36820), (994, 28930), (1052, 27335), (1315, 21868), (1420, 20251), (1540, 18673), (1562, 18410), (1841, 15620), (1988, 14465), (2485, 11572), (2630, 10934), (2893, 9940), (3124, 9205), (3682, 7810), (3905, 7364), (4970, 5786), (5260, 5467)]