81423512

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{1091}}^1$

素因数の和:1607

約数の個数: 32

約数和(自身を含む): 161179200

約数和(自身を除く): 79755688

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 491, 982, 1091, 1964, 2182, 3928, 4364, 8728, 9329, 18658, 20729, 37316, 41458, 74632, 82916, 165832, 535681, 1071362, 2142724, 4285448, 10177939, 20355878, 40711756, 81423512]

約数ペア:

[(1, 81423512), (2, 40711756), (4, 20355878), (8, 10177939), (19, 4285448), (38, 2142724), (76, 1071362), (152, 535681), (491, 165832), (982, 82916), (1091, 74632), (1964, 41458), (2182, 37316), (3928, 20729), (4364, 18658), (8728, 9329)]