78438640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{140069}}^1$

素因数の和:140089

約数の個数: 40

約数和(自身を含む): 208424160

約数和(自身を除く): 129985520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 140069, 280138, 560276, 700345, 980483, 1120552, 1400690, 1960966, 2241104, 2801380, 3921932, 4902415, 5602760, 7843864, 9804830, 11205520, 15687728, 19609660, 39219320, 78438640]

約数ペア:

[(1, 78438640), (2, 39219320), (4, 19609660), (5, 15687728), (7, 11205520), (8, 9804830), (10, 7843864), (14, 5602760), (16, 4902415), (20, 3921932), (28, 2801380), (35, 2241104), (40, 1960966), (56, 1400690), (70, 1120552), (80, 980483), (112, 700345), (140, 560276), (280, 280138), (560, 140069)]