28727960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{509}}^1$

素因数の和:620

約数の個数: 64

約数和(自身を含む): 69400800

約数和(自身を除く): 40672840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 83, 85, 136, 166, 170, 332, 340, 415, 509, 664, 680, 830, 1018, 1411, 1660, 2036, 2545, 2822, 3320, 4072, 5090, 5644, 7055, 8653, 10180, 11288, 14110, 17306, 20360, 28220, 34612, 42247, 43265, 56440, 69224, 84494, 86530, 168988, 173060, 211235, 337976, 346120, 422470, 718199, 844940, 1436398, 1689880, 2872796, 3590995, 5745592, 7181990, 14363980, 28727960]

約数ペア:

[(1, 28727960), (2, 14363980), (4, 7181990), (5, 5745592), (8, 3590995), (10, 2872796), (17, 1689880), (20, 1436398), (34, 844940), (40, 718199), (68, 422470), (83, 346120), (85, 337976), (136, 211235), (166, 173060), (170, 168988), (332, 86530), (340, 84494), (415, 69224), (509, 56440), (664, 43265), (680, 42247), (830, 34612), (1018, 28220), (1411, 20360), (1660, 17306), (2036, 14110), (2545, 11288), (2822, 10180), (3320, 8653), (4072, 7055), (5090, 5644)]