31721940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:206

約数の個数: 144

約数和(自身を含む): 102211200

約数和(自身を除く): 70489260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 59, 60, 87, 90, 103, 116, 118, 145, 174, 177, 180, 206, 236, 261, 290, 295, 309, 348, 354, 412, 435, 515, 522, 531, 580, 590, 618, 708, 870, 885, 927, 1030, 1044, 1062, 1180, 1236, 1305, 1545, 1711, 1740, 1770, 1854, 2060, 2124, 2610, 2655, 2987, 3090, 3422, 3540, 3708, 4635, 5133, 5220, 5310, 5974, 6077, 6180, 6844, 8555, 8961, 9270, 10266, 10620, 11948, 12154, 14935, 15399, 17110, 17922, 18231, 18540, 20532, 24308, 25665, 26883, 29870, 30385, 30798, 34220, 35844, 36462, 44805, 51330, 53766, 54693, 59740, 60770, 61596, 72924, 76995, 89610, 91155, 102660, 107532, 109386, 121540, 134415, 153990, 176233, 179220, 182310, 218772, 268830, 273465, 307980, 352466, 364620, 528699, 537660, 546930, 704932, 881165, 1057398, 1093860, 1586097, 1762330, 2114796, 2643495, 3172194, 3524660, 5286990, 6344388, 7930485, 10573980, 15860970, 31721940]

約数ペア:

[(1, 31721940), (2, 15860970), (3, 10573980), (4, 7930485), (5, 6344388), (6, 5286990), (9, 3524660), (10, 3172194), (12, 2643495), (15, 2114796), (18, 1762330), (20, 1586097), (29, 1093860), (30, 1057398), (36, 881165), (45, 704932), (58, 546930), (59, 537660), (60, 528699), (87, 364620), (90, 352466), (103, 307980), (116, 273465), (118, 268830), (145, 218772), (174, 182310), (177, 179220), (180, 176233), (206, 153990), (236, 134415), (261, 121540), (290, 109386), (295, 107532), (309, 102660), (348, 91155), (354, 89610), (412, 76995), (435, 72924), (515, 61596), (522, 60770), (531, 59740), (580, 54693), (590, 53766), (618, 51330), (708, 44805), (870, 36462), (885, 35844), (927, 34220), (1030, 30798), (1044, 30385), (1062, 29870), (1180, 26883), (1236, 25665), (1305, 24308), (1545, 20532), (1711, 18540), (1740, 18231), (1770, 17922), (1854, 17110), (2060, 15399), (2124, 14935), (2610, 12154), (2655, 11948), (2987, 10620), (3090, 10266), (3422, 9270), (3540, 8961), (3708, 8555), (4635, 6844), (5133, 6180), (5220, 6077), (5310, 5974)]