196889680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{197}}^1$

素因数の和:285

約数の個数: 120

約数和(自身を含む): 511982856

約数和(自身を除く): 315093176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 197, 208, 248, 260, 310, 394, 403, 496, 520, 620, 788, 806, 961, 985, 1040, 1240, 1576, 1612, 1922, 1970, 2015, 2480, 2561, 3152, 3224, 3844, 3940, 4030, 4805, 5122, 6107, 6448, 7688, 7880, 8060, 9610, 10244, 12214, 12493, 12805, 15376, 15760, 16120, 19220, 20488, 24428, 24986, 25610, 30535, 32240, 38440, 40976, 48856, 49972, 51220, 61070, 62465, 76880, 79391, 97712, 99944, 102440, 122140, 124930, 158782, 189317, 199888, 204880, 244280, 249860, 317564, 378634, 396955, 488560, 499720, 635128, 757268, 793910, 946585, 999440, 1270256, 1514536, 1587820, 1893170, 2461121, 3029072, 3175640, 3786340, 4922242, 6351280, 7572680, 9844484, 12305605, 15145360, 19688968, 24611210, 39377936, 49222420, 98444840, 196889680]

約数ペア:

[(1, 196889680), (2, 98444840), (4, 49222420), (5, 39377936), (8, 24611210), (10, 19688968), (13, 15145360), (16, 12305605), (20, 9844484), (26, 7572680), (31, 6351280), (40, 4922242), (52, 3786340), (62, 3175640), (65, 3029072), (80, 2461121), (104, 1893170), (124, 1587820), (130, 1514536), (155, 1270256), (197, 999440), (208, 946585), (248, 793910), (260, 757268), (310, 635128), (394, 499720), (403, 488560), (496, 396955), (520, 378634), (620, 317564), (788, 249860), (806, 244280), (961, 204880), (985, 199888), (1040, 189317), (1240, 158782), (1576, 124930), (1612, 122140), (1922, 102440), (1970, 99944), (2015, 97712), (2480, 79391), (2561, 76880), (3152, 62465), (3224, 61070), (3844, 51220), (3940, 49972), (4030, 48856), (4805, 40976), (5122, 38440), (6107, 32240), (6448, 30535), (7688, 25610), (7880, 24986), (8060, 24428), (9610, 20488), (10244, 19220), (12214, 16120), (12493, 15760), (12805, 15376)]