19853020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 48771072

約数和(自身を除く): 28918052

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 41, 44, 55, 62, 71, 82, 110, 124, 142, 155, 164, 205, 220, 284, 310, 341, 355, 410, 451, 620, 682, 710, 781, 820, 902, 1271, 1364, 1420, 1562, 1705, 1804, 2201, 2255, 2542, 2911, 3124, 3410, 3905, 4402, 4510, 5084, 5822, 6355, 6820, 7810, 8804, 9020, 11005, 11644, 12710, 13981, 14555, 15620, 22010, 24211, 25420, 27962, 29110, 32021, 44020, 48422, 55924, 58220, 64042, 69905, 90241, 96844, 121055, 128084, 139810, 160105, 180482, 242110, 279620, 320210, 360964, 451205, 484220, 640420, 902410, 992651, 1804820, 1985302, 3970604, 4963255, 9926510, 19853020]

約数ペア:

[(1, 19853020), (2, 9926510), (4, 4963255), (5, 3970604), (10, 1985302), (11, 1804820), (20, 992651), (22, 902410), (31, 640420), (41, 484220), (44, 451205), (55, 360964), (62, 320210), (71, 279620), (82, 242110), (110, 180482), (124, 160105), (142, 139810), (155, 128084), (164, 121055), (205, 96844), (220, 90241), (284, 69905), (310, 64042), (341, 58220), (355, 55924), (410, 48422), (451, 44020), (620, 32021), (682, 29110), (710, 27962), (781, 25420), (820, 24211), (902, 22010), (1271, 15620), (1364, 14555), (1420, 13981), (1562, 12710), (1705, 11644), (1804, 11005), (2201, 9020), (2255, 8804), (2542, 7810), (2911, 6820), (3124, 6355), (3410, 5822), (3905, 5084), (4402, 4510)]