77915960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:840

約数の個数: 64

約数和(自身を含む): 185997600

約数和(自身を除く): 108081640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 157, 190, 314, 380, 628, 653, 760, 785, 1256, 1306, 1570, 2612, 2983, 3140, 3265, 5224, 5966, 6280, 6530, 11932, 12407, 13060, 14915, 23864, 24814, 26120, 29830, 49628, 59660, 62035, 99256, 102521, 119320, 124070, 205042, 248140, 410084, 496280, 512605, 820168, 1025210, 1947899, 2050420, 3895798, 4100840, 7791596, 9739495, 15583192, 19478990, 38957980, 77915960]

約数ペア:

[(1, 77915960), (2, 38957980), (4, 19478990), (5, 15583192), (8, 9739495), (10, 7791596), (19, 4100840), (20, 3895798), (38, 2050420), (40, 1947899), (76, 1025210), (95, 820168), (152, 512605), (157, 496280), (190, 410084), (314, 248140), (380, 205042), (628, 124070), (653, 119320), (760, 102521), (785, 99256), (1256, 62035), (1306, 59660), (1570, 49628), (2612, 29830), (2983, 26120), (3140, 24814), (3265, 23864), (5224, 14915), (5966, 13060), (6280, 12407), (6530, 11932)]