81694720

素因数分解:

$2^{12}\times 5^1\times {\mathrm{3989}}^1$

素因数の和:4018

約数の個数: 52

約数和(自身を含む): 196092540

約数和(自身を除く): 114397820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 3989, 4096, 5120, 7978, 10240, 15956, 19945, 20480, 31912, 39890, 63824, 79780, 127648, 159560, 255296, 319120, 510592, 638240, 1021184, 1276480, 2042368, 2552960, 4084736, 5105920, 8169472, 10211840, 16338944, 20423680, 40847360, 81694720]

約数ペア:

[(1, 81694720), (2, 40847360), (4, 20423680), (5, 16338944), (8, 10211840), (10, 8169472), (16, 5105920), (20, 4084736), (32, 2552960), (40, 2042368), (64, 1276480), (80, 1021184), (128, 638240), (160, 510592), (256, 319120), (320, 255296), (512, 159560), (640, 127648), (1024, 79780), (1280, 63824), (2048, 39890), (2560, 31912), (3989, 20480), (4096, 19945), (5120, 15956), (7978, 10240)]