205376440

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 472586400

約数和(自身を除く): 267209960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 197, 268, 335, 389, 394, 536, 670, 778, 788, 985, 1340, 1556, 1576, 1945, 1970, 2680, 3112, 3890, 3940, 7780, 7880, 13199, 15560, 26063, 26398, 52126, 52796, 65995, 76633, 104252, 105592, 130315, 131990, 153266, 208504, 260630, 263980, 306532, 383165, 521260, 527960, 613064, 766330, 1042520, 1532660, 3065320, 5134411, 10268822, 20537644, 25672055, 41075288, 51344110, 102688220, 205376440]

約数ペア:

[(1, 205376440), (2, 102688220), (4, 51344110), (5, 41075288), (8, 25672055), (10, 20537644), (20, 10268822), (40, 5134411), (67, 3065320), (134, 1532660), (197, 1042520), (268, 766330), (335, 613064), (389, 527960), (394, 521260), (536, 383165), (670, 306532), (778, 263980), (788, 260630), (985, 208504), (1340, 153266), (1556, 131990), (1576, 130315), (1945, 105592), (1970, 104252), (2680, 76633), (3112, 65995), (3890, 52796), (3940, 52126), (7780, 26398), (7880, 26063), (13199, 15560)]