81398380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1487}}^1$

素因数の和:1543

約数の個数: 96

約数和(自身を含む): 215986176

約数和(自身を除く): 134587796

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 23, 28, 34, 35, 46, 68, 70, 85, 92, 115, 119, 140, 161, 170, 230, 238, 322, 340, 391, 460, 476, 595, 644, 782, 805, 1190, 1487, 1564, 1610, 1955, 2380, 2737, 2974, 3220, 3910, 5474, 5948, 7435, 7820, 10409, 10948, 13685, 14870, 20818, 25279, 27370, 29740, 34201, 41636, 50558, 52045, 54740, 68402, 101116, 104090, 126395, 136804, 171005, 176953, 208180, 239407, 252790, 342010, 353906, 478814, 505580, 581417, 684020, 707812, 884765, 957628, 1162834, 1197035, 1769530, 2325668, 2394070, 2907085, 3539060, 4069919, 4788140, 5814170, 8139838, 11628340, 16279676, 20349595, 40699190, 81398380]

約数ペア:

[(1, 81398380), (2, 40699190), (4, 20349595), (5, 16279676), (7, 11628340), (10, 8139838), (14, 5814170), (17, 4788140), (20, 4069919), (23, 3539060), (28, 2907085), (34, 2394070), (35, 2325668), (46, 1769530), (68, 1197035), (70, 1162834), (85, 957628), (92, 884765), (115, 707812), (119, 684020), (140, 581417), (161, 505580), (170, 478814), (230, 353906), (238, 342010), (322, 252790), (340, 239407), (391, 208180), (460, 176953), (476, 171005), (595, 136804), (644, 126395), (782, 104090), (805, 101116), (1190, 68402), (1487, 54740), (1564, 52045), (1610, 50558), (1955, 41636), (2380, 34201), (2737, 29740), (2974, 27370), (3220, 25279), (3910, 20818), (5474, 14870), (5948, 13685), (7435, 10948), (7820, 10409)]