300000020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{28463}}^1$

素因数の和:28520

約数の個数: 48

約数和(自身を含む): 688601088

約数和(自身を除く): 388601068

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 2108, 2635, 5270, 10540, 28463, 56926, 113852, 142315, 284630, 483871, 569260, 882353, 967742, 1764706, 1935484, 2419355, 3529412, 4411765, 4838710, 8823530, 9677420, 15000001, 17647060, 30000002, 60000004, 75000005, 150000010, 300000020]

約数ペア:

[(1, 300000020), (2, 150000010), (4, 75000005), (5, 60000004), (10, 30000002), (17, 17647060), (20, 15000001), (31, 9677420), (34, 8823530), (62, 4838710), (68, 4411765), (85, 3529412), (124, 2419355), (155, 1935484), (170, 1764706), (310, 967742), (340, 882353), (527, 569260), (620, 483871), (1054, 284630), (2108, 142315), (2635, 113852), (5270, 56926), (10540, 28463)]