28401220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{811}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 63842688

約数和(自身を除く): 35441468

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 103, 170, 206, 340, 412, 515, 811, 1030, 1622, 1751, 2060, 3244, 3502, 4055, 7004, 8110, 8755, 13787, 16220, 17510, 27574, 35020, 55148, 68935, 83533, 137870, 167066, 275740, 334132, 417665, 835330, 1420061, 1670660, 2840122, 5680244, 7100305, 14200610, 28401220]

約数ペア:

[(1, 28401220), (2, 14200610), (4, 7100305), (5, 5680244), (10, 2840122), (17, 1670660), (20, 1420061), (34, 835330), (68, 417665), (85, 334132), (103, 275740), (170, 167066), (206, 137870), (340, 83533), (412, 68935), (515, 55148), (811, 35020), (1030, 27574), (1622, 17510), (1751, 16220), (2060, 13787), (3244, 8755), (3502, 8110), (4055, 7004)]