7994440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 19339200

約数和(自身を除く): 11344760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 67, 76, 95, 134, 152, 157, 190, 268, 314, 335, 380, 536, 628, 670, 760, 785, 1256, 1273, 1340, 1570, 2546, 2680, 2983, 3140, 5092, 5966, 6280, 6365, 10184, 10519, 11932, 12730, 14915, 21038, 23864, 25460, 29830, 42076, 50920, 52595, 59660, 84152, 105190, 119320, 199861, 210380, 399722, 420760, 799444, 999305, 1598888, 1998610, 3997220, 7994440]

約数ペア:

[(1, 7994440), (2, 3997220), (4, 1998610), (5, 1598888), (8, 999305), (10, 799444), (19, 420760), (20, 399722), (38, 210380), (40, 199861), (67, 119320), (76, 105190), (95, 84152), (134, 59660), (152, 52595), (157, 50920), (190, 42076), (268, 29830), (314, 25460), (335, 23864), (380, 21038), (536, 14915), (628, 12730), (670, 11932), (760, 10519), (785, 10184), (1256, 6365), (1273, 6280), (1340, 5966), (1570, 5092), (2546, 3140), (2680, 2983)]