64671440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:460

約数の個数: 80

約数和(自身を含む): 159870720

約数和(自身を除く): 95199280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 157, 190, 271, 304, 314, 380, 542, 628, 760, 785, 1084, 1256, 1355, 1520, 1570, 2168, 2512, 2710, 2983, 3140, 4336, 5149, 5420, 5966, 6280, 10298, 10840, 11932, 12560, 14915, 20596, 21680, 23864, 25745, 29830, 41192, 42547, 47728, 51490, 59660, 82384, 85094, 102980, 119320, 170188, 205960, 212735, 238640, 340376, 411920, 425470, 680752, 808393, 850940, 1616786, 1701880, 3233572, 3403760, 4041965, 6467144, 8083930, 12934288, 16167860, 32335720, 64671440]

約数ペア:

[(1, 64671440), (2, 32335720), (4, 16167860), (5, 12934288), (8, 8083930), (10, 6467144), (16, 4041965), (19, 3403760), (20, 3233572), (38, 1701880), (40, 1616786), (76, 850940), (80, 808393), (95, 680752), (152, 425470), (157, 411920), (190, 340376), (271, 238640), (304, 212735), (314, 205960), (380, 170188), (542, 119320), (628, 102980), (760, 85094), (785, 82384), (1084, 59660), (1256, 51490), (1355, 47728), (1520, 42547), (1570, 41192), (2168, 29830), (2512, 25745), (2710, 23864), (2983, 21680), (3140, 20596), (4336, 14915), (5149, 12560), (5420, 11932), (5966, 10840), (6280, 10298)]