20180899520

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{708599}}^1$

素因数の和:708705

約数の個数: 56

約数和(自身を含む): 48595788000

約数和(自身を除く): 28414888480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 712, 890, 1424, 1780, 2848, 3560, 5696, 7120, 14240, 28480, 708599, 1417198, 2834396, 3542995, 5668792, 7085990, 11337584, 14171980, 22675168, 28343960, 45350336, 56687920, 63065311, 113375840, 126130622, 226751680, 252261244, 315326555, 504522488, 630653110, 1009044976, 1261306220, 2018089952, 2522612440, 4036179904, 5045224880, 10090449760, 20180899520]

約数ペア:

[(1, 20180899520), (2, 10090449760), (4, 5045224880), (5, 4036179904), (8, 2522612440), (10, 2018089952), (16, 1261306220), (20, 1009044976), (32, 630653110), (40, 504522488), (64, 315326555), (80, 252261244), (89, 226751680), (160, 126130622), (178, 113375840), (320, 63065311), (356, 56687920), (445, 45350336), (712, 28343960), (890, 22675168), (1424, 14171980), (1780, 11337584), (2848, 7085990), (3560, 5668792), (5696, 3542995), (7120, 2834396), (14240, 1417198), (28480, 708599)]