71681720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1613}}^1$

素因数の和:1736

約数の個数: 64

約数和(自身を含む): 177798240

約数和(自身を除く): 106116520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 505, 808, 1010, 1111, 1613, 2020, 2222, 3226, 4040, 4444, 5555, 6452, 8065, 8888, 11110, 12904, 16130, 17743, 22220, 32260, 35486, 44440, 64520, 70972, 88715, 141944, 162913, 177430, 325826, 354860, 651652, 709720, 814565, 1303304, 1629130, 1792043, 3258260, 3584086, 6516520, 7168172, 8960215, 14336344, 17920430, 35840860, 71681720]

約数ペア:

[(1, 71681720), (2, 35840860), (4, 17920430), (5, 14336344), (8, 8960215), (10, 7168172), (11, 6516520), (20, 3584086), (22, 3258260), (40, 1792043), (44, 1629130), (55, 1303304), (88, 814565), (101, 709720), (110, 651652), (202, 354860), (220, 325826), (404, 177430), (440, 162913), (505, 141944), (808, 88715), (1010, 70972), (1111, 64520), (1613, 44440), (2020, 35486), (2222, 32260), (3226, 22220), (4040, 17743), (4444, 16130), (5555, 12904), (6452, 11110), (8065, 8888)]