21484905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{461}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 15770775

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 239, 461, 717, 1195, 1383, 2305, 3107, 3585, 5993, 6915, 9321, 15535, 17979, 29965, 46605, 89895, 110179, 330537, 550895, 1432327, 1652685, 4296981, 7161635, 21484905]

約数ペア:

[(1, 21484905), (3, 7161635), (5, 4296981), (13, 1652685), (15, 1432327), (39, 550895), (65, 330537), (195, 110179), (239, 89895), (461, 46605), (717, 29965), (1195, 17979), (1383, 15535), (2305, 9321), (3107, 6915), (3585, 5993)]