18890240

素因数分解:

$2^9\times 5^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:227

約数の個数: 80

約数和(自身を含む): 46550592

約数和(自身を除く): 27660352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 157, 160, 188, 235, 256, 314, 320, 376, 470, 512, 628, 640, 752, 785, 940, 1256, 1280, 1504, 1570, 1880, 2512, 2560, 3008, 3140, 3760, 5024, 6016, 6280, 7379, 7520, 10048, 12032, 12560, 14758, 15040, 20096, 24064, 25120, 29516, 30080, 36895, 40192, 50240, 59032, 60160, 73790, 80384, 100480, 118064, 120320, 147580, 200960, 236128, 295160, 401920, 472256, 590320, 944512, 1180640, 1889024, 2361280, 3778048, 4722560, 9445120, 18890240]

約数ペア:

[(1, 18890240), (2, 9445120), (4, 4722560), (5, 3778048), (8, 2361280), (10, 1889024), (16, 1180640), (20, 944512), (32, 590320), (40, 472256), (47, 401920), (64, 295160), (80, 236128), (94, 200960), (128, 147580), (157, 120320), (160, 118064), (188, 100480), (235, 80384), (256, 73790), (314, 60160), (320, 59032), (376, 50240), (470, 40192), (512, 36895), (628, 30080), (640, 29516), (752, 25120), (785, 24064), (940, 20096), (1256, 15040), (1280, 14758), (1504, 12560), (1570, 12032), (1880, 10048), (2512, 7520), (2560, 7379), (3008, 6280), (3140, 6016), (3760, 5024)]