131281280

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:572

約数の個数: 128

約数和(自身を含む): 349574400

約数和(自身を除く): 218293120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 509, 520, 620, 640, 806, 832, 992, 1018, 1040, 1240, 1612, 1664, 1984, 2015, 2036, 2080, 2480, 2545, 3224, 3968, 4030, 4072, 4160, 4960, 5090, 6448, 6617, 8060, 8144, 8320, 9920, 10180, 12896, 13234, 15779, 16120, 16288, 19840, 20360, 25792, 26468, 31558, 32240, 32576, 33085, 40720, 51584, 52936, 63116, 64480, 65152, 66170, 78895, 81440, 105872, 126232, 128960, 132340, 157790, 162880, 205127, 211744, 252464, 257920, 264680, 315580, 325760, 410254, 423488, 504928, 529360, 631160, 820508, 846976, 1009856, 1025635, 1058720, 1262320, 1641016, 2019712, 2051270, 2117440, 2524640, 3282032, 4102540, 4234880, 5049280, 6564064, 8205080, 10098560, 13128128, 16410160, 26256256, 32820320, 65640640, 131281280]

約数ペア:

[(1, 131281280), (2, 65640640), (4, 32820320), (5, 26256256), (8, 16410160), (10, 13128128), (13, 10098560), (16, 8205080), (20, 6564064), (26, 5049280), (31, 4234880), (32, 4102540), (40, 3282032), (52, 2524640), (62, 2117440), (64, 2051270), (65, 2019712), (80, 1641016), (104, 1262320), (124, 1058720), (128, 1025635), (130, 1009856), (155, 846976), (160, 820508), (208, 631160), (248, 529360), (260, 504928), (310, 423488), (320, 410254), (403, 325760), (416, 315580), (496, 264680), (509, 257920), (520, 252464), (620, 211744), (640, 205127), (806, 162880), (832, 157790), (992, 132340), (1018, 128960), (1040, 126232), (1240, 105872), (1612, 81440), (1664, 78895), (1984, 66170), (2015, 65152), (2036, 64480), (2080, 63116), (2480, 52936), (2545, 51584), (3224, 40720), (3968, 33085), (4030, 32576), (4072, 32240), (4160, 31558), (4960, 26468), (5090, 25792), (6448, 20360), (6617, 19840), (8060, 16288), (8144, 16120), (8320, 15779), (9920, 13234), (10180, 12896)]