81697840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6343}}^1$

素因数の和:6386

約数の個数: 80

約数和(自身を含む): 226556928

約数和(自身を除く): 144859088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6343, 6440, 12686, 12880, 25372, 31715, 44401, 50744, 63430, 88802, 101488, 126860, 145889, 177604, 222005, 253720, 291778, 355208, 444010, 507440, 583556, 710416, 729445, 888020, 1021223, 1167112, 1458890, 1776040, 2042446, 2334224, 2917780, 3552080, 4084892, 5106115, 5835560, 8169784, 10212230, 11671120, 16339568, 20424460, 40848920, 81697840]

約数ペア:

[(1, 81697840), (2, 40848920), (4, 20424460), (5, 16339568), (7, 11671120), (8, 10212230), (10, 8169784), (14, 5835560), (16, 5106115), (20, 4084892), (23, 3552080), (28, 2917780), (35, 2334224), (40, 2042446), (46, 1776040), (56, 1458890), (70, 1167112), (80, 1021223), (92, 888020), (112, 729445), (115, 710416), (140, 583556), (161, 507440), (184, 444010), (230, 355208), (280, 291778), (322, 253720), (368, 222005), (460, 177604), (560, 145889), (644, 126860), (805, 101488), (920, 88802), (1288, 63430), (1610, 50744), (1840, 44401), (2576, 31715), (3220, 25372), (6343, 12880), (6440, 12686)]