638962360

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{1451}}^1$

素因数の和:1672

約数の個数: 64

約数和(自身を含む): 1466229600

約数和(自身を除く): 827267240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 109, 202, 218, 404, 436, 505, 545, 808, 872, 1010, 1090, 1451, 2020, 2180, 2902, 4040, 4360, 5804, 7255, 11009, 11608, 14510, 22018, 29020, 44036, 55045, 58040, 88072, 110090, 146551, 158159, 220180, 293102, 316318, 440360, 586204, 632636, 732755, 790795, 1172408, 1265272, 1465510, 1581590, 2931020, 3163180, 5862040, 6326360, 15974059, 31948118, 63896236, 79870295, 127792472, 159740590, 319481180, 638962360]

約数ペア:

[(1, 638962360), (2, 319481180), (4, 159740590), (5, 127792472), (8, 79870295), (10, 63896236), (20, 31948118), (40, 15974059), (101, 6326360), (109, 5862040), (202, 3163180), (218, 2931020), (404, 1581590), (436, 1465510), (505, 1265272), (545, 1172408), (808, 790795), (872, 732755), (1010, 632636), (1090, 586204), (1451, 440360), (2020, 316318), (2180, 293102), (2902, 220180), (4040, 158159), (4360, 146551), (5804, 110090), (7255, 88072), (11009, 58040), (11608, 55045), (14510, 44036), (22018, 29020)]