28011880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:650

約数の個数: 64

約数和(自身を含む): 68664960

約数和(自身を除く): 40653080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 103, 104, 130, 206, 260, 412, 515, 520, 523, 824, 1030, 1046, 1339, 2060, 2092, 2615, 2678, 4120, 4184, 5230, 5356, 6695, 6799, 10460, 10712, 13390, 13598, 20920, 26780, 27196, 33995, 53560, 53869, 54392, 67990, 107738, 135980, 215476, 269345, 271960, 430952, 538690, 700297, 1077380, 1400594, 2154760, 2801188, 3501485, 5602376, 7002970, 14005940, 28011880]

約数ペア:

[(1, 28011880), (2, 14005940), (4, 7002970), (5, 5602376), (8, 3501485), (10, 2801188), (13, 2154760), (20, 1400594), (26, 1077380), (40, 700297), (52, 538690), (65, 430952), (103, 271960), (104, 269345), (130, 215476), (206, 135980), (260, 107738), (412, 67990), (515, 54392), (520, 53869), (523, 53560), (824, 33995), (1030, 27196), (1046, 26780), (1339, 20920), (2060, 13598), (2092, 13390), (2615, 10712), (2678, 10460), (4120, 6799), (4184, 6695), (5230, 5356)]