19879460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{991}}^1$

素因数の和:1076

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 25117660

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 68, 85, 118, 170, 236, 295, 340, 590, 991, 1003, 1180, 1982, 2006, 3964, 4012, 4955, 5015, 9910, 10030, 16847, 19820, 20060, 33694, 58469, 67388, 84235, 116938, 168470, 233876, 292345, 336940, 584690, 993973, 1169380, 1987946, 3975892, 4969865, 9939730, 19879460]

約数ペア:

[(1, 19879460), (2, 9939730), (4, 4969865), (5, 3975892), (10, 1987946), (17, 1169380), (20, 993973), (34, 584690), (59, 336940), (68, 292345), (85, 233876), (118, 168470), (170, 116938), (236, 84235), (295, 67388), (340, 58469), (590, 33694), (991, 20060), (1003, 19820), (1180, 16847), (1982, 10030), (2006, 9910), (3964, 5015), (4012, 4955)]