21006890930

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1\times {\mathrm{577}}^1$

素因数の和:1083

約数の個数: 64

約数和(自身を含む): 38672916480

約数和(自身を除く): 17666025550

約数列:

[1, 2, 5, 10, 109, 127, 218, 254, 263, 526, 545, 577, 635, 1090, 1154, 1270, 1315, 2630, 2885, 5770, 13843, 27686, 28667, 33401, 57334, 62893, 66802, 69215, 73279, 125786, 138430, 143335, 146558, 151751, 167005, 286670, 303502, 314465, 334010, 366395, 628930, 732790, 758755, 1517510, 3640709, 7281418, 7987411, 15974822, 16540859, 18203545, 19272377, 33081718, 36407090, 38544754, 39937055, 79874110, 82704295, 96361885, 165408590, 192723770, 2100689093, 4201378186, 10503445465, 21006890930]

約数ペア:

[(1, 21006890930), (2, 10503445465), (5, 4201378186), (10, 2100689093), (109, 192723770), (127, 165408590), (218, 96361885), (254, 82704295), (263, 79874110), (526, 39937055), (545, 38544754), (577, 36407090), (635, 33081718), (1090, 19272377), (1154, 18203545), (1270, 16540859), (1315, 15974822), (2630, 7987411), (2885, 7281418), (5770, 3640709), (13843, 1517510), (27686, 758755), (28667, 732790), (33401, 628930), (57334, 366395), (62893, 334010), (66802, 314465), (69215, 303502), (73279, 286670), (125786, 167005), (138430, 151751), (143335, 146558)]