81698560

素因数分解:

$2^8\times 5^1\times {\mathrm{83}}^1\times {\mathrm{769}}^1$

素因数の和:873

約数の個数: 72

約数和(自身を含む): 198308880

約数和(自身を除く): 116610320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 128, 160, 166, 256, 320, 332, 415, 640, 664, 769, 830, 1280, 1328, 1538, 1660, 2656, 3076, 3320, 3845, 5312, 6152, 6640, 7690, 10624, 12304, 13280, 15380, 21248, 24608, 26560, 30760, 49216, 53120, 61520, 63827, 98432, 106240, 123040, 127654, 196864, 246080, 255308, 319135, 492160, 510616, 638270, 984320, 1021232, 1276540, 2042464, 2553080, 4084928, 5106160, 8169856, 10212320, 16339712, 20424640, 40849280, 81698560]

約数ペア:

[(1, 81698560), (2, 40849280), (4, 20424640), (5, 16339712), (8, 10212320), (10, 8169856), (16, 5106160), (20, 4084928), (32, 2553080), (40, 2042464), (64, 1276540), (80, 1021232), (83, 984320), (128, 638270), (160, 510616), (166, 492160), (256, 319135), (320, 255308), (332, 246080), (415, 196864), (640, 127654), (664, 123040), (769, 106240), (830, 98432), (1280, 63827), (1328, 61520), (1538, 53120), (1660, 49216), (2656, 30760), (3076, 26560), (3320, 24608), (3845, 21248), (5312, 15380), (6152, 13280), (6640, 12304), (7690, 10624)]