20408840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30013}}^1$

素因数の和:30041

約数の個数: 32

約数和(自身を含む): 48622680

約数和(自身を除く): 28213840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30013, 60026, 120052, 150065, 240104, 300130, 510221, 600260, 1020442, 1200520, 2040884, 2551105, 4081768, 5102210, 10204420, 20408840]

約数ペア:

[(1, 20408840), (2, 10204420), (4, 5102210), (5, 4081768), (8, 2551105), (10, 2040884), (17, 1200520), (20, 1020442), (34, 600260), (40, 510221), (68, 300130), (85, 240104), (136, 150065), (170, 120052), (340, 60026), (680, 30013)]