2021806640

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{73681}}^1$

素因数の和:73715

約数の個数: 80

約数和(自身を含む): 5481940800

約数和(自身を除く): 3460134160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 3430, 3920, 5488, 6860, 13720, 27440, 73681, 147362, 294724, 368405, 515767, 589448, 736810, 1031534, 1178896, 1473620, 2063068, 2578835, 2947240, 3610369, 4126136, 5157670, 5894480, 7220738, 8252272, 10315340, 14441476, 18051845, 20630680, 25272583, 28882952, 36103690, 41261360, 50545166, 57765904, 72207380, 101090332, 126362915, 144414760, 202180664, 252725830, 288829520, 404361328, 505451660, 1010903320, 2021806640]

約数ペア:

[(1, 2021806640), (2, 1010903320), (4, 505451660), (5, 404361328), (7, 288829520), (8, 252725830), (10, 202180664), (14, 144414760), (16, 126362915), (20, 101090332), (28, 72207380), (35, 57765904), (40, 50545166), (49, 41261360), (56, 36103690), (70, 28882952), (80, 25272583), (98, 20630680), (112, 18051845), (140, 14441476), (196, 10315340), (245, 8252272), (280, 7220738), (343, 5894480), (392, 5157670), (490, 4126136), (560, 3610369), (686, 2947240), (784, 2578835), (980, 2063068), (1372, 1473620), (1715, 1178896), (1960, 1031534), (2744, 736810), (3430, 589448), (3920, 515767), (5488, 368405), (6860, 294724), (13720, 147362), (27440, 73681)]