20960800

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:243

約数の個数: 144

約数和(自身を含む): 61871040

約数和(自身を除く): 40910240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 25, 28, 32, 35, 38, 40, 50, 56, 70, 76, 80, 95, 100, 112, 133, 140, 152, 160, 175, 190, 197, 200, 224, 266, 280, 304, 350, 380, 394, 400, 475, 532, 560, 608, 665, 700, 760, 788, 800, 950, 985, 1064, 1120, 1330, 1379, 1400, 1520, 1576, 1900, 1970, 2128, 2660, 2758, 2800, 3040, 3152, 3325, 3743, 3800, 3940, 4256, 4925, 5320, 5516, 5600, 6304, 6650, 6895, 7486, 7600, 7880, 9850, 10640, 11032, 13300, 13790, 14972, 15200, 15760, 18715, 19700, 21280, 22064, 26201, 26600, 27580, 29944, 31520, 34475, 37430, 39400, 44128, 52402, 53200, 55160, 59888, 68950, 74860, 78800, 93575, 104804, 106400, 110320, 119776, 131005, 137900, 149720, 157600, 187150, 209608, 220640, 262010, 275800, 299440, 374300, 419216, 524020, 551600, 598880, 655025, 748600, 838432, 1048040, 1103200, 1310050, 1497200, 2096080, 2620100, 2994400, 4192160, 5240200, 10480400, 20960800]

約数ペア:

[(1, 20960800), (2, 10480400), (4, 5240200), (5, 4192160), (7, 2994400), (8, 2620100), (10, 2096080), (14, 1497200), (16, 1310050), (19, 1103200), (20, 1048040), (25, 838432), (28, 748600), (32, 655025), (35, 598880), (38, 551600), (40, 524020), (50, 419216), (56, 374300), (70, 299440), (76, 275800), (80, 262010), (95, 220640), (100, 209608), (112, 187150), (133, 157600), (140, 149720), (152, 137900), (160, 131005), (175, 119776), (190, 110320), (197, 106400), (200, 104804), (224, 93575), (266, 78800), (280, 74860), (304, 68950), (350, 59888), (380, 55160), (394, 53200), (400, 52402), (475, 44128), (532, 39400), (560, 37430), (608, 34475), (665, 31520), (700, 29944), (760, 27580), (788, 26600), (800, 26201), (950, 22064), (985, 21280), (1064, 19700), (1120, 18715), (1330, 15760), (1379, 15200), (1400, 14972), (1520, 13790), (1576, 13300), (1900, 11032), (1970, 10640), (2128, 9850), (2660, 7880), (2758, 7600), (2800, 7486), (3040, 6895), (3152, 6650), (3325, 6304), (3743, 5600), (3800, 5516), (3940, 5320), (4256, 4925)]