81705890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2671}}^1$

素因数の和:2727

約数の個数: 64

約数和(自身を含む): 184688640

約数和(自身を除く): 102982750

約数列:

[1, 2, 5, 7, 10, 14, 19, 23, 35, 38, 46, 70, 95, 115, 133, 161, 190, 230, 266, 322, 437, 665, 805, 874, 1330, 1610, 2185, 2671, 3059, 4370, 5342, 6118, 13355, 15295, 18697, 26710, 30590, 37394, 50749, 61433, 93485, 101498, 122866, 186970, 253745, 307165, 355243, 430031, 507490, 614330, 710486, 860062, 1167227, 1776215, 2150155, 2334454, 3552430, 4300310, 5836135, 8170589, 11672270, 16341178, 40852945, 81705890]

約数ペア:

[(1, 81705890), (2, 40852945), (5, 16341178), (7, 11672270), (10, 8170589), (14, 5836135), (19, 4300310), (23, 3552430), (35, 2334454), (38, 2150155), (46, 1776215), (70, 1167227), (95, 860062), (115, 710486), (133, 614330), (161, 507490), (190, 430031), (230, 355243), (266, 307165), (322, 253745), (437, 186970), (665, 122866), (805, 101498), (874, 93485), (1330, 61433), (1610, 50749), (2185, 37394), (2671, 30590), (3059, 26710), (4370, 18697), (5342, 15295), (6118, 13355)]