81999540

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{1033}}^1$

素因数の和:1068

約数の個数: 180

約数和(自身を含む): 299522916

約数和(自身を除く): 217523376

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 294, 315, 324, 378, 405, 420, 441, 490, 540, 567, 588, 630, 735, 756, 810, 882, 945, 980, 1033, 1134, 1260, 1323, 1470, 1620, 1764, 1890, 2066, 2205, 2268, 2646, 2835, 2940, 3099, 3780, 3969, 4132, 4410, 5165, 5292, 5670, 6198, 6615, 7231, 7938, 8820, 9297, 10330, 11340, 12396, 13230, 14462, 15495, 15876, 18594, 19845, 20660, 21693, 26460, 27891, 28924, 30990, 36155, 37188, 39690, 43386, 46485, 50617, 55782, 61980, 65079, 72310, 79380, 83673, 86772, 92970, 101234, 108465, 111564, 130158, 139455, 144620, 151851, 167346, 185940, 195237, 202468, 216930, 253085, 260316, 278910, 303702, 325395, 334692, 390474, 418365, 433860, 455553, 506170, 557820, 585711, 607404, 650790, 759255, 780948, 836730, 911106, 976185, 1012340, 1171422, 1301580, 1366659, 1518510, 1673460, 1822212, 1952370, 2277765, 2342844, 2733318, 2928555, 3037020, 3904740, 4099977, 4555530, 5466636, 5857110, 6833295, 8199954, 9111060, 11714220, 13666590, 16399908, 20499885, 27333180, 40999770, 81999540]

約数ペア:

[(1, 81999540), (2, 40999770), (3, 27333180), (4, 20499885), (5, 16399908), (6, 13666590), (7, 11714220), (9, 9111060), (10, 8199954), (12, 6833295), (14, 5857110), (15, 5466636), (18, 4555530), (20, 4099977), (21, 3904740), (27, 3037020), (28, 2928555), (30, 2733318), (35, 2342844), (36, 2277765), (42, 1952370), (45, 1822212), (49, 1673460), (54, 1518510), (60, 1366659), (63, 1301580), (70, 1171422), (81, 1012340), (84, 976185), (90, 911106), (98, 836730), (105, 780948), (108, 759255), (126, 650790), (135, 607404), (140, 585711), (147, 557820), (162, 506170), (180, 455553), (189, 433860), (196, 418365), (210, 390474), (245, 334692), (252, 325395), (270, 303702), (294, 278910), (315, 260316), (324, 253085), (378, 216930), (405, 202468), (420, 195237), (441, 185940), (490, 167346), (540, 151851), (567, 144620), (588, 139455), (630, 130158), (735, 111564), (756, 108465), (810, 101234), (882, 92970), (945, 86772), (980, 83673), (1033, 79380), (1134, 72310), (1260, 65079), (1323, 61980), (1470, 55782), (1620, 50617), (1764, 46485), (1890, 43386), (2066, 39690), (2205, 37188), (2268, 36155), (2646, 30990), (2835, 28924), (2940, 27891), (3099, 26460), (3780, 21693), (3969, 20660), (4132, 19845), (4410, 18594), (5165, 15876), (5292, 15495), (5670, 14462), (6198, 13230), (6615, 12396), (7231, 11340), (7938, 10330), (8820, 9297)]