28128520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{100459}}^1$

素因数の和:100477

約数の個数: 32

約数和(自身を含む): 72331200

約数和(自身を除く): 44202680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 100459, 200918, 401836, 502295, 703213, 803672, 1004590, 1406426, 2009180, 2812852, 3516065, 4018360, 5625704, 7032130, 14064260, 28128520]

約数ペア:

[(1, 28128520), (2, 14064260), (4, 7032130), (5, 5625704), (7, 4018360), (8, 3516065), (10, 2812852), (14, 2009180), (20, 1406426), (28, 1004590), (35, 803672), (40, 703213), (56, 502295), (70, 401836), (140, 200918), (280, 100459)]