256538240

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{331}}^1$

素因数の和:530

約数の個数: 128

約数和(自身を含む): 707080320

約数和(自身を除く): 450542080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 173, 224, 280, 320, 331, 346, 448, 560, 640, 662, 692, 865, 896, 1120, 1211, 1324, 1384, 1655, 1730, 2240, 2317, 2422, 2648, 2768, 3310, 3460, 4480, 4634, 4844, 5296, 5536, 6055, 6620, 6920, 9268, 9688, 10592, 11072, 11585, 12110, 13240, 13840, 18536, 19376, 21184, 22144, 23170, 24220, 26480, 27680, 37072, 38752, 42368, 46340, 48440, 52960, 55360, 57263, 74144, 77504, 92680, 96880, 105920, 110720, 114526, 148288, 155008, 185360, 193760, 211840, 229052, 286315, 296576, 370720, 387520, 400841, 458104, 572630, 741440, 775040, 801682, 916208, 1145260, 1482880, 1603364, 1832416, 2004205, 2290520, 3206728, 3664832, 4008410, 4581040, 6413456, 7329664, 8016820, 9162080, 12826912, 16033640, 18324160, 25653824, 32067280, 36648320, 51307648, 64134560, 128269120, 256538240]

約数ペア:

[(1, 256538240), (2, 128269120), (4, 64134560), (5, 51307648), (7, 36648320), (8, 32067280), (10, 25653824), (14, 18324160), (16, 16033640), (20, 12826912), (28, 9162080), (32, 8016820), (35, 7329664), (40, 6413456), (56, 4581040), (64, 4008410), (70, 3664832), (80, 3206728), (112, 2290520), (128, 2004205), (140, 1832416), (160, 1603364), (173, 1482880), (224, 1145260), (280, 916208), (320, 801682), (331, 775040), (346, 741440), (448, 572630), (560, 458104), (640, 400841), (662, 387520), (692, 370720), (865, 296576), (896, 286315), (1120, 229052), (1211, 211840), (1324, 193760), (1384, 185360), (1655, 155008), (1730, 148288), (2240, 114526), (2317, 110720), (2422, 105920), (2648, 96880), (2768, 92680), (3310, 77504), (3460, 74144), (4480, 57263), (4634, 55360), (4844, 52960), (5296, 48440), (5536, 46340), (6055, 42368), (6620, 38752), (6920, 37072), (9268, 27680), (9688, 26480), (10592, 24220), (11072, 23170), (11585, 22144), (12110, 21184), (13240, 19376), (13840, 18536)]