20149275

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 35113824

約数和(自身を除く): 14964549

約数列:

[1, 3, 5, 15, 25, 37, 53, 75, 111, 137, 159, 185, 265, 411, 555, 685, 795, 925, 1325, 1961, 2055, 2775, 3425, 3975, 5069, 5883, 7261, 9805, 10275, 15207, 21783, 25345, 29415, 36305, 49025, 76035, 108915, 126725, 147075, 181525, 268657, 380175, 544575, 805971, 1343285, 4029855, 6716425, 20149275]

約数ペア:

[(1, 20149275), (3, 6716425), (5, 4029855), (15, 1343285), (25, 805971), (37, 544575), (53, 380175), (75, 268657), (111, 181525), (137, 147075), (159, 126725), (185, 108915), (265, 76035), (411, 49025), (555, 36305), (685, 29415), (795, 25345), (925, 21783), (1325, 15207), (1961, 10275), (2055, 9805), (2775, 7261), (3425, 5883), (3975, 5069)]