211720

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 32

約数和(自身を含む): 489600

約数和(自身を除く): 277880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 79, 134, 158, 268, 316, 335, 395, 536, 632, 670, 790, 1340, 1580, 2680, 3160, 5293, 10586, 21172, 26465, 42344, 52930, 105860, 211720]

約数ペア:

[(1, 211720), (2, 105860), (4, 52930), (5, 42344), (8, 26465), (10, 21172), (20, 10586), (40, 5293), (67, 3160), (79, 2680), (134, 1580), (158, 1340), (268, 790), (316, 670), (335, 632), (395, 536)]