189171820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{1787}}^1$

素因数の和:1942

約数の個数: 48

約数和(自身を含む): 408522240

約数和(自身を除く): 219350420

約数列:

[1, 2, 4, 5, 10, 20, 67, 79, 134, 158, 268, 316, 335, 395, 670, 790, 1340, 1580, 1787, 3574, 5293, 7148, 8935, 10586, 17870, 21172, 26465, 35740, 52930, 105860, 119729, 141173, 239458, 282346, 478916, 564692, 598645, 705865, 1197290, 1411730, 2394580, 2823460, 9458591, 18917182, 37834364, 47292955, 94585910, 189171820]

約数ペア:

[(1, 189171820), (2, 94585910), (4, 47292955), (5, 37834364), (10, 18917182), (20, 9458591), (67, 2823460), (79, 2394580), (134, 1411730), (158, 1197290), (268, 705865), (316, 598645), (335, 564692), (395, 478916), (670, 282346), (790, 239458), (1340, 141173), (1580, 119729), (1787, 105860), (3574, 52930), (5293, 35740), (7148, 26465), (8935, 21172), (10586, 17870)]