38981440

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1997}}^1$

素因数の和:2075

約数の個数: 56

約数和(自身を含む): 94393512

約数和(自身を除く): 55412072

約数列:

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

約数ペア:

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