20422720

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3359}}^1$

素因数の和:3395

約数の個数: 56

約数和(自身を含む): 51206400

約数和(自身を除く): 30783680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3359, 6080, 6718, 13436, 16795, 26872, 33590, 53744, 63821, 67180, 107488, 127642, 134360, 214976, 255284, 268720, 319105, 510568, 537440, 638210, 1021136, 1074880, 1276420, 2042272, 2552840, 4084544, 5105680, 10211360, 20422720]

約数ペア:

[(1, 20422720), (2, 10211360), (4, 5105680), (5, 4084544), (8, 2552840), (10, 2042272), (16, 1276420), (19, 1074880), (20, 1021136), (32, 638210), (38, 537440), (40, 510568), (64, 319105), (76, 268720), (80, 255284), (95, 214976), (152, 134360), (160, 127642), (190, 107488), (304, 67180), (320, 63821), (380, 53744), (608, 33590), (760, 26872), (1216, 16795), (1520, 13436), (3040, 6718), (3359, 6080)]