77962880

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1997}}^1$

素因数の和:2077

約数の個数: 64

約数和(自身を含む): 189530280

約数和(自身を除く): 111567400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 1220, 1952, 1997, 2440, 3904, 3994, 4880, 7808, 7988, 9760, 9985, 15976, 19520, 19970, 31952, 39040, 39940, 63904, 79880, 121817, 127808, 159760, 243634, 255616, 319520, 487268, 609085, 639040, 974536, 1218170, 1278080, 1949072, 2436340, 3898144, 4872680, 7796288, 9745360, 15592576, 19490720, 38981440, 77962880]

約数ペア:

[(1, 77962880), (2, 38981440), (4, 19490720), (5, 15592576), (8, 9745360), (10, 7796288), (16, 4872680), (20, 3898144), (32, 2436340), (40, 1949072), (61, 1278080), (64, 1218170), (80, 974536), (122, 639040), (128, 609085), (160, 487268), (244, 319520), (305, 255616), (320, 243634), (488, 159760), (610, 127808), (640, 121817), (976, 79880), (1220, 63904), (1952, 39940), (1997, 39040), (2440, 31952), (3904, 19970), (3994, 19520), (4880, 15976), (7808, 9985), (7988, 9760)]