20631730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{821}}^1$

素因数の和:1194

約数の個数: 32

約数和(自身を含む): 42612480

約数和(自身を除く): 21980750

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 359, 718, 821, 1642, 1795, 2513, 3590, 4105, 5026, 5747, 8210, 11494, 12565, 25130, 28735, 57470, 294739, 589478, 1473695, 2063173, 2947390, 4126346, 10315865, 20631730]

約数ペア:

[(1, 20631730), (2, 10315865), (5, 4126346), (7, 2947390), (10, 2063173), (14, 1473695), (35, 589478), (70, 294739), (359, 57470), (718, 28735), (821, 25130), (1642, 12565), (1795, 11494), (2513, 8210), (3590, 5747), (4105, 5026)]