1257971720

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{239}}^1\times {\mathrm{727}}^1$

素因数の和:1158

約数の個数: 64

約数和(自身を含む): 2861913600

約数和(自身を除く): 1603941880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 239, 362, 478, 724, 727, 905, 956, 1195, 1448, 1454, 1810, 1912, 2390, 2908, 3620, 3635, 4780, 5816, 7240, 7270, 9560, 14540, 29080, 43259, 86518, 131587, 173036, 173753, 216295, 263174, 346072, 347506, 432590, 526348, 657935, 695012, 865180, 868765, 1052696, 1315870, 1390024, 1730360, 1737530, 2631740, 3475060, 5263480, 6950120, 31449293, 62898586, 125797172, 157246465, 251594344, 314492930, 628985860, 1257971720]

約数ペア:

[(1, 1257971720), (2, 628985860), (4, 314492930), (5, 251594344), (8, 157246465), (10, 125797172), (20, 62898586), (40, 31449293), (181, 6950120), (239, 5263480), (362, 3475060), (478, 2631740), (724, 1737530), (727, 1730360), (905, 1390024), (956, 1315870), (1195, 1052696), (1448, 868765), (1454, 865180), (1810, 695012), (1912, 657935), (2390, 526348), (2908, 432590), (3620, 347506), (3635, 346072), (4780, 263174), (5816, 216295), (7240, 173753), (7270, 173036), (9560, 131587), (14540, 86518), (29080, 43259)]