20072320

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 48715200

約数和(自身を除く): 28642880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 397, 632, 640, 790, 794, 1264, 1580, 1588, 1985, 2528, 3160, 3176, 3970, 5056, 6320, 6352, 7940, 10112, 12640, 12704, 15880, 25280, 25408, 31363, 31760, 50560, 50816, 62726, 63520, 125452, 127040, 156815, 250904, 254080, 313630, 501808, 627260, 1003616, 1254520, 2007232, 2509040, 4014464, 5018080, 10036160, 20072320]

約数ペア:

[(1, 20072320), (2, 10036160), (4, 5018080), (5, 4014464), (8, 2509040), (10, 2007232), (16, 1254520), (20, 1003616), (32, 627260), (40, 501808), (64, 313630), (79, 254080), (80, 250904), (128, 156815), (158, 127040), (160, 125452), (316, 63520), (320, 62726), (395, 50816), (397, 50560), (632, 31760), (640, 31363), (790, 25408), (794, 25280), (1264, 15880), (1580, 12704), (1588, 12640), (1985, 10112), (2528, 7940), (3160, 6352), (3176, 6320), (3970, 5056)]