81690880

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3359}}^1$

素因数の和:3399

約数の個数: 72

約数和(自身を含む): 206035200

約数和(自身を除く): 124344320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 608, 640, 760, 1216, 1280, 1520, 2432, 3040, 3359, 4864, 6080, 6718, 12160, 13436, 16795, 24320, 26872, 33590, 53744, 63821, 67180, 107488, 127642, 134360, 214976, 255284, 268720, 319105, 429952, 510568, 537440, 638210, 859904, 1021136, 1074880, 1276420, 2042272, 2149760, 2552840, 4084544, 4299520, 5105680, 8169088, 10211360, 16338176, 20422720, 40845440, 81690880]

約数ペア:

[(1, 81690880), (2, 40845440), (4, 20422720), (5, 16338176), (8, 10211360), (10, 8169088), (16, 5105680), (19, 4299520), (20, 4084544), (32, 2552840), (38, 2149760), (40, 2042272), (64, 1276420), (76, 1074880), (80, 1021136), (95, 859904), (128, 638210), (152, 537440), (160, 510568), (190, 429952), (256, 319105), (304, 268720), (320, 255284), (380, 214976), (608, 134360), (640, 127642), (760, 107488), (1216, 67180), (1280, 63821), (1520, 53744), (2432, 33590), (3040, 26872), (3359, 24320), (4864, 16795), (6080, 13436), (6718, 12160)]