64689280

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1657}}^1$

素因数の和:1737

約数の個数: 64

約数和(自身を含む): 157277880

約数和(自身を除く): 92588600

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, 1657, 1952, 2440, 3314, 3904, 4880, 6628, 7808, 8285, 9760, 13256, 16570, 19520, 26512, 33140, 39040, 53024, 66280, 101077, 106048, 132560, 202154, 212096, 265120, 404308, 505385, 530240, 808616, 1010770, 1060480, 1617232, 2021540, 3234464, 4043080, 6468928, 8086160, 12937856, 16172320, 32344640, 64689280]

約数ペア:

[(1, 64689280), (2, 32344640), (4, 16172320), (5, 12937856), (8, 8086160), (10, 6468928), (16, 4043080), (20, 3234464), (32, 2021540), (40, 1617232), (61, 1060480), (64, 1010770), (80, 808616), (122, 530240), (128, 505385), (160, 404308), (244, 265120), (305, 212096), (320, 202154), (488, 132560), (610, 106048), (640, 101077), (976, 66280), (1220, 53024), (1657, 39040), (1952, 33140), (2440, 26512), (3314, 19520), (3904, 16570), (4880, 13256), (6628, 9760), (7808, 8285)]