256760980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{2063}}^1$

素因数の和:2213

約数の個数: 72

約数和(自身を含む): 632475648

約数和(自身を除く): 375714668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 127, 140, 196, 245, 254, 490, 508, 635, 889, 980, 1270, 1778, 2063, 2540, 3556, 4126, 4445, 6223, 8252, 8890, 10315, 12446, 14441, 17780, 20630, 24892, 28882, 31115, 41260, 57764, 62230, 72205, 101087, 124460, 144410, 202174, 262001, 288820, 404348, 505435, 524002, 1010870, 1048004, 1310005, 1834007, 2021740, 2620010, 3668014, 5240020, 7336028, 9170035, 12838049, 18340070, 25676098, 36680140, 51352196, 64190245, 128380490, 256760980]

約数ペア:

[(1, 256760980), (2, 128380490), (4, 64190245), (5, 51352196), (7, 36680140), (10, 25676098), (14, 18340070), (20, 12838049), (28, 9170035), (35, 7336028), (49, 5240020), (70, 3668014), (98, 2620010), (127, 2021740), (140, 1834007), (196, 1310005), (245, 1048004), (254, 1010870), (490, 524002), (508, 505435), (635, 404348), (889, 288820), (980, 262001), (1270, 202174), (1778, 144410), (2063, 124460), (2540, 101087), (3556, 72205), (4126, 62230), (4445, 57764), (6223, 41260), (8252, 31115), (8890, 28882), (10315, 24892), (12446, 20630), (14441, 17780)]