18974080

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1289}}^1$

素因数の和:1331

約数の個数: 64

約数和(自身を含む): 47368800

約数和(自身を除く): 28394720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1289, 1472, 1840, 2578, 2944, 3680, 5156, 6445, 7360, 10312, 12890, 14720, 20624, 25780, 29647, 41248, 51560, 59294, 82496, 103120, 118588, 148235, 164992, 206240, 237176, 296470, 412480, 474352, 592940, 824960, 948704, 1185880, 1897408, 2371760, 3794816, 4743520, 9487040, 18974080]

約数ペア:

[(1, 18974080), (2, 9487040), (4, 4743520), (5, 3794816), (8, 2371760), (10, 1897408), (16, 1185880), (20, 948704), (23, 824960), (32, 592940), (40, 474352), (46, 412480), (64, 296470), (80, 237176), (92, 206240), (115, 164992), (128, 148235), (160, 118588), (184, 103120), (230, 82496), (320, 59294), (368, 51560), (460, 41248), (640, 29647), (736, 25780), (920, 20624), (1289, 14720), (1472, 12890), (1840, 10312), (2578, 7360), (2944, 6445), (3680, 5156)]