4065280

素因数分解:

$2^{11}\times 5^1\times {\mathrm{397}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 9778860

約数和(自身を除く): 5713580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 397, 512, 640, 794, 1024, 1280, 1588, 1985, 2048, 2560, 3176, 3970, 5120, 6352, 7940, 10240, 12704, 15880, 25408, 31760, 50816, 63520, 101632, 127040, 203264, 254080, 406528, 508160, 813056, 1016320, 2032640, 4065280]

約数ペア:

[(1, 4065280), (2, 2032640), (4, 1016320), (5, 813056), (8, 508160), (10, 406528), (16, 254080), (20, 203264), (32, 127040), (40, 101632), (64, 63520), (80, 50816), (128, 31760), (160, 25408), (256, 15880), (320, 12704), (397, 10240), (512, 7940), (640, 6352), (794, 5120), (1024, 3970), (1280, 3176), (1588, 2560), (1985, 2048)]