853668280

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1\times {\mathrm{661}}^1$

素因数の和:1144

約数の個数: 64

約数和(自身を含む): 1951840800

約数和(自身を除く): 1098172520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 389, 415, 661, 664, 778, 830, 1322, 1556, 1660, 1945, 2644, 3112, 3305, 3320, 3890, 5288, 6610, 7780, 13220, 15560, 26440, 32287, 54863, 64574, 109726, 129148, 161435, 219452, 257129, 258296, 274315, 322870, 438904, 514258, 548630, 645740, 1028516, 1097260, 1285645, 1291480, 2057032, 2194520, 2571290, 5142580, 10285160, 21341707, 42683414, 85366828, 106708535, 170733656, 213417070, 426834140, 853668280]

約数ペア:

[(1, 853668280), (2, 426834140), (4, 213417070), (5, 170733656), (8, 106708535), (10, 85366828), (20, 42683414), (40, 21341707), (83, 10285160), (166, 5142580), (332, 2571290), (389, 2194520), (415, 2057032), (661, 1291480), (664, 1285645), (778, 1097260), (830, 1028516), (1322, 645740), (1556, 548630), (1660, 514258), (1945, 438904), (2644, 322870), (3112, 274315), (3305, 258296), (3320, 257129), (3890, 219452), (5288, 161435), (6610, 129148), (7780, 109726), (13220, 64574), (15560, 54863), (26440, 32287)]