20001720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7247}}^1$

素因数の和:7284

約数の個数: 64

約数和(自身を含む): 62622720

約数和(自身を除く): 42621000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7247, 14494, 21741, 28988, 36235, 43482, 57976, 72470, 86964, 108705, 144940, 166681, 173928, 217410, 289880, 333362, 434820, 500043, 666724, 833405, 869640, 1000086, 1333448, 1666810, 2000172, 2500215, 3333620, 4000344, 5000430, 6667240, 10000860, 20001720]

約数ペア:

[(1, 20001720), (2, 10000860), (3, 6667240), (4, 5000430), (5, 4000344), (6, 3333620), (8, 2500215), (10, 2000172), (12, 1666810), (15, 1333448), (20, 1000086), (23, 869640), (24, 833405), (30, 666724), (40, 500043), (46, 434820), (60, 333362), (69, 289880), (92, 217410), (115, 173928), (120, 166681), (138, 144940), (184, 108705), (230, 86964), (276, 72470), (345, 57976), (460, 43482), (552, 36235), (690, 28988), (920, 21741), (1380, 14494), (2760, 7247)]