18996820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{947}}^1$

素因数の和:1032

約数の個数: 48

約数和(自身を含む): 43001280

約数和(自身を除く): 24004460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 68, 85, 118, 170, 236, 295, 340, 590, 947, 1003, 1180, 1894, 2006, 3788, 4012, 4735, 5015, 9470, 10030, 16099, 18940, 20060, 32198, 55873, 64396, 80495, 111746, 160990, 223492, 279365, 321980, 558730, 949841, 1117460, 1899682, 3799364, 4749205, 9498410, 18996820]

約数ペア:

[(1, 18996820), (2, 9498410), (4, 4749205), (5, 3799364), (10, 1899682), (17, 1117460), (20, 949841), (34, 558730), (59, 321980), (68, 279365), (85, 223492), (118, 160990), (170, 111746), (236, 80495), (295, 64396), (340, 55873), (590, 32198), (947, 20060), (1003, 18940), (1180, 16099), (1894, 10030), (2006, 9470), (3788, 5015), (4012, 4735)]