643364410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{617}}^2$

素因数の和:1267

約数の個数: 36

約数和(自身を含む): 1256025258

約数和(自身を除く): 612660848

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 617, 845, 1234, 1690, 3085, 6170, 8021, 16042, 40105, 80210, 104273, 208546, 380689, 521365, 761378, 1042730, 1903445, 3806890, 4948957, 9897914, 24744785, 49489570, 64336441, 128672882, 321682205, 643364410]

約数ペア:

[(1, 643364410), (2, 321682205), (5, 128672882), (10, 64336441), (13, 49489570), (26, 24744785), (65, 9897914), (130, 4948957), (169, 3806890), (338, 1903445), (617, 1042730), (845, 761378), (1234, 521365), (1690, 380689), (3085, 208546), (6170, 104273), (8021, 80210), (16042, 40105)]