81550980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1097}}^1$

素因数の和:1178

約数の個数: 144

約数和(自身を含む): 287763840

約数和(自身を除く): 206212860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 59, 60, 63, 70, 84, 90, 105, 118, 126, 140, 177, 180, 210, 236, 252, 295, 315, 354, 413, 420, 531, 590, 630, 708, 826, 885, 1062, 1097, 1180, 1239, 1260, 1652, 1770, 2065, 2124, 2194, 2478, 2655, 3291, 3540, 3717, 4130, 4388, 4956, 5310, 5485, 6195, 6582, 7434, 7679, 8260, 9873, 10620, 10970, 12390, 13164, 14868, 15358, 16455, 18585, 19746, 21940, 23037, 24780, 30716, 32910, 37170, 38395, 39492, 46074, 49365, 64723, 65820, 69111, 74340, 76790, 92148, 98730, 115185, 129446, 138222, 153580, 194169, 197460, 230370, 258892, 276444, 323615, 345555, 388338, 453061, 460740, 582507, 647230, 691110, 776676, 906122, 970845, 1165014, 1294460, 1359183, 1382220, 1812244, 1941690, 2265305, 2330028, 2718366, 2912535, 3883380, 4077549, 4530610, 5436732, 5825070, 6795915, 8155098, 9061220, 11650140, 13591830, 16310196, 20387745, 27183660, 40775490, 81550980]

約数ペア:

[(1, 81550980), (2, 40775490), (3, 27183660), (4, 20387745), (5, 16310196), (6, 13591830), (7, 11650140), (9, 9061220), (10, 8155098), (12, 6795915), (14, 5825070), (15, 5436732), (18, 4530610), (20, 4077549), (21, 3883380), (28, 2912535), (30, 2718366), (35, 2330028), (36, 2265305), (42, 1941690), (45, 1812244), (59, 1382220), (60, 1359183), (63, 1294460), (70, 1165014), (84, 970845), (90, 906122), (105, 776676), (118, 691110), (126, 647230), (140, 582507), (177, 460740), (180, 453061), (210, 388338), (236, 345555), (252, 323615), (295, 276444), (315, 258892), (354, 230370), (413, 197460), (420, 194169), (531, 153580), (590, 138222), (630, 129446), (708, 115185), (826, 98730), (885, 92148), (1062, 76790), (1097, 74340), (1180, 69111), (1239, 65820), (1260, 64723), (1652, 49365), (1770, 46074), (2065, 39492), (2124, 38395), (2194, 37170), (2478, 32910), (2655, 30716), (3291, 24780), (3540, 23037), (3717, 21940), (4130, 19746), (4388, 18585), (4956, 16455), (5310, 15358), (5485, 14868), (6195, 13164), (6582, 12390), (7434, 10970), (7679, 10620), (8260, 9873)]