64821920

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21323}}^1$

素因数の和:21357

約数の個数: 48

約数和(自身を含む): 161209440

約数和(自身を除く): 96387520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 21323, 42646, 85292, 106615, 170584, 213230, 341168, 405137, 426460, 682336, 810274, 852920, 1620548, 1705840, 2025685, 3241096, 3411680, 4051370, 6482192, 8102740, 12964384, 16205480, 32410960, 64821920]

約数ペア:

[(1, 64821920), (2, 32410960), (4, 16205480), (5, 12964384), (8, 8102740), (10, 6482192), (16, 4051370), (19, 3411680), (20, 3241096), (32, 2025685), (38, 1705840), (40, 1620548), (76, 852920), (80, 810274), (95, 682336), (152, 426460), (160, 405137), (190, 341168), (304, 213230), (380, 170584), (608, 106615), (760, 85292), (1520, 42646), (3040, 21323)]