21515684680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{14071}}^1$

素因数の和:14259

約数の個数: 128

約数和(自身を含む): 57062522880

約数和(自身を除く): 35546838200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 127, 140, 172, 215, 254, 280, 301, 344, 430, 508, 602, 635, 860, 889, 1016, 1204, 1270, 1505, 1720, 1778, 2408, 2540, 3010, 3556, 4445, 5080, 5461, 6020, 7112, 8890, 10922, 12040, 14071, 17780, 21844, 27305, 28142, 35560, 38227, 43688, 54610, 56284, 70355, 76454, 98497, 109220, 112568, 140710, 152908, 191135, 196994, 218440, 281420, 305816, 382270, 393988, 492485, 562840, 605053, 764540, 787976, 984970, 1210106, 1529080, 1787017, 1969940, 2420212, 3025265, 3574034, 3939880, 4235371, 4840424, 6050530, 7148068, 8470742, 8935085, 12101060, 12509119, 14296136, 16941484, 17870170, 21176855, 24202120, 25018238, 33882968, 35740340, 42353710, 50036476, 62545595, 71480680, 76841731, 84707420, 100072952, 125091190, 153683462, 169414840, 250182380, 307366924, 384208655, 500364760, 537892117, 614733848, 768417310, 1075784234, 1536834620, 2151568468, 2689460585, 3073669240, 4303136936, 5378921170, 10757842340, 21515684680]

約数ペア:

[(1, 21515684680), (2, 10757842340), (4, 5378921170), (5, 4303136936), (7, 3073669240), (8, 2689460585), (10, 2151568468), (14, 1536834620), (20, 1075784234), (28, 768417310), (35, 614733848), (40, 537892117), (43, 500364760), (56, 384208655), (70, 307366924), (86, 250182380), (127, 169414840), (140, 153683462), (172, 125091190), (215, 100072952), (254, 84707420), (280, 76841731), (301, 71480680), (344, 62545595), (430, 50036476), (508, 42353710), (602, 35740340), (635, 33882968), (860, 25018238), (889, 24202120), (1016, 21176855), (1204, 17870170), (1270, 16941484), (1505, 14296136), (1720, 12509119), (1778, 12101060), (2408, 8935085), (2540, 8470742), (3010, 7148068), (3556, 6050530), (4445, 4840424), (5080, 4235371), (5461, 3939880), (6020, 3574034), (7112, 3025265), (8890, 2420212), (10922, 1969940), (12040, 1787017), (14071, 1529080), (17780, 1210106), (21844, 984970), (27305, 787976), (28142, 764540), (35560, 605053), (38227, 562840), (43688, 492485), (54610, 393988), (56284, 382270), (70355, 305816), (76454, 281420), (98497, 218440), (109220, 196994), (112568, 191135), (140710, 152908)]