20124780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25801}}^1$

素因数の和:25826

約数の個数: 48

約数和(自身を含む): 60686304

約数和(自身を除く): 40561524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25801, 51602, 77403, 103204, 129005, 154806, 258010, 309612, 335413, 387015, 516020, 670826, 774030, 1006239, 1341652, 1548060, 1677065, 2012478, 3354130, 4024956, 5031195, 6708260, 10062390, 20124780]

約数ペア:

[(1, 20124780), (2, 10062390), (3, 6708260), (4, 5031195), (5, 4024956), (6, 3354130), (10, 2012478), (12, 1677065), (13, 1548060), (15, 1341652), (20, 1006239), (26, 774030), (30, 670826), (39, 516020), (52, 387015), (60, 335413), (65, 309612), (78, 258010), (130, 154806), (156, 129005), (195, 103204), (260, 77403), (390, 51602), (780, 25801)]