840496020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{21991}}^1$

素因数の和:22030

約数の個数: 144

約数和(自身を含む): 2948335488

約数和(自身を除く): 2107839468

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 780, 910, 980, 1092, 1274, 1365, 1470, 1820, 1911, 2548, 2730, 2940, 3185, 3822, 5460, 6370, 7644, 9555, 12740, 19110, 21991, 38220, 43982, 65973, 87964, 109955, 131946, 153937, 219910, 263892, 285883, 307874, 329865, 439820, 461811, 571766, 615748, 659730, 769685, 857649, 923622, 1077559, 1143532, 1319460, 1429415, 1539370, 1715298, 1847244, 2001181, 2155118, 2309055, 2858830, 3078740, 3232677, 3430596, 4002362, 4288245, 4310236, 4618110, 5387795, 5717660, 6003543, 6465354, 8004724, 8576490, 9236220, 10005905, 10775590, 12007086, 12930708, 14008267, 16163385, 17152980, 20011810, 21551180, 24014172, 28016534, 30017715, 32326770, 40023620, 42024801, 56033068, 60035430, 64653540, 70041335, 84049602, 120070860, 140082670, 168099204, 210124005, 280165340, 420248010, 840496020]

約数ペア:

[(1, 840496020), (2, 420248010), (3, 280165340), (4, 210124005), (5, 168099204), (6, 140082670), (7, 120070860), (10, 84049602), (12, 70041335), (13, 64653540), (14, 60035430), (15, 56033068), (20, 42024801), (21, 40023620), (26, 32326770), (28, 30017715), (30, 28016534), (35, 24014172), (39, 21551180), (42, 20011810), (49, 17152980), (52, 16163385), (60, 14008267), (65, 12930708), (70, 12007086), (78, 10775590), (84, 10005905), (91, 9236220), (98, 8576490), (105, 8004724), (130, 6465354), (140, 6003543), (147, 5717660), (156, 5387795), (182, 4618110), (195, 4310236), (196, 4288245), (210, 4002362), (245, 3430596), (260, 3232677), (273, 3078740), (294, 2858830), (364, 2309055), (390, 2155118), (420, 2001181), (455, 1847244), (490, 1715298), (546, 1539370), (588, 1429415), (637, 1319460), (735, 1143532), (780, 1077559), (910, 923622), (980, 857649), (1092, 769685), (1274, 659730), (1365, 615748), (1470, 571766), (1820, 461811), (1911, 439820), (2548, 329865), (2730, 307874), (2940, 285883), (3185, 263892), (3822, 219910), (5460, 153937), (6370, 131946), (7644, 109955), (9555, 87964), (12740, 65973), (19110, 43982), (21991, 38220)]