1721103440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{359}}^1\times {\mathrm{1223}}^1$

素因数の和:1609

約数の個数: 120

約数和(自身を含む): 4671665280

約数和(自身を除く): 2950561840

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, 359, 392, 490, 560, 718, 784, 980, 1223, 1436, 1795, 1960, 2446, 2513, 2872, 3590, 3920, 4892, 5026, 5744, 6115, 7180, 8561, 9784, 10052, 12230, 12565, 14360, 17122, 17591, 19568, 20104, 24460, 25130, 28720, 34244, 35182, 40208, 42805, 48920, 50260, 59927, 68488, 70364, 85610, 87955, 97840, 100520, 119854, 136976, 140728, 171220, 175910, 201040, 239708, 281456, 299635, 342440, 351820, 439057, 479416, 599270, 684880, 703640, 878114, 958832, 1198540, 1407280, 1756228, 2195285, 2397080, 3073399, 3512456, 4390570, 4794160, 6146798, 7024912, 8781140, 12293596, 15366995, 17562280, 21513793, 24587192, 30733990, 35124560, 43027586, 49174384, 61467980, 86055172, 107568965, 122935960, 172110344, 215137930, 245871920, 344220688, 430275860, 860551720, 1721103440]

約数ペア:

[(1, 1721103440), (2, 860551720), (4, 430275860), (5, 344220688), (7, 245871920), (8, 215137930), (10, 172110344), (14, 122935960), (16, 107568965), (20, 86055172), (28, 61467980), (35, 49174384), (40, 43027586), (49, 35124560), (56, 30733990), (70, 24587192), (80, 21513793), (98, 17562280), (112, 15366995), (140, 12293596), (196, 8781140), (245, 7024912), (280, 6146798), (359, 4794160), (392, 4390570), (490, 3512456), (560, 3073399), (718, 2397080), (784, 2195285), (980, 1756228), (1223, 1407280), (1436, 1198540), (1795, 958832), (1960, 878114), (2446, 703640), (2513, 684880), (2872, 599270), (3590, 479416), (3920, 439057), (4892, 351820), (5026, 342440), (5744, 299635), (6115, 281456), (7180, 239708), (8561, 201040), (9784, 175910), (10052, 171220), (12230, 140728), (12565, 136976), (14360, 119854), (17122, 100520), (17591, 97840), (19568, 87955), (20104, 85610), (24460, 70364), (25130, 68488), (28720, 59927), (34244, 50260), (35182, 48920), (40208, 42805)]