20968305

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:158

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 17047695

約数列:

[1, 3, 5, 15, 19, 29, 43, 57, 59, 87, 95, 129, 145, 177, 215, 285, 295, 435, 551, 645, 817, 885, 1121, 1247, 1653, 1711, 2451, 2537, 2755, 3363, 3741, 4085, 5133, 5605, 6235, 7611, 8265, 8555, 12255, 12685, 16815, 18705, 23693, 25665, 32509, 38055, 48203, 71079, 73573, 97527, 118465, 144609, 162545, 220719, 241015, 355395, 367865, 487635, 723045, 1103595, 1397887, 4193661, 6989435, 20968305]

約数ペア:

[(1, 20968305), (3, 6989435), (5, 4193661), (15, 1397887), (19, 1103595), (29, 723045), (43, 487635), (57, 367865), (59, 355395), (87, 241015), (95, 220719), (129, 162545), (145, 144609), (177, 118465), (215, 97527), (285, 73573), (295, 71079), (435, 48203), (551, 38055), (645, 32509), (817, 25665), (885, 23693), (1121, 18705), (1247, 16815), (1653, 12685), (1711, 12255), (2451, 8555), (2537, 8265), (2755, 7611), (3363, 6235), (3741, 5605), (4085, 5133)]