15251740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 37920960

約数和(自身を除く): 22669220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 197, 245, 316, 394, 395, 490, 553, 788, 790, 980, 985, 1106, 1379, 1580, 1970, 2212, 2758, 2765, 3871, 3940, 5516, 5530, 6895, 7742, 9653, 11060, 13790, 15484, 15563, 19306, 19355, 27580, 31126, 38612, 38710, 48265, 62252, 77420, 77815, 96530, 108941, 155630, 193060, 217882, 311260, 435764, 544705, 762587, 1089410, 1525174, 2178820, 3050348, 3812935, 7625870, 15251740]

約数ペア:

[(1, 15251740), (2, 7625870), (4, 3812935), (5, 3050348), (7, 2178820), (10, 1525174), (14, 1089410), (20, 762587), (28, 544705), (35, 435764), (49, 311260), (70, 217882), (79, 193060), (98, 155630), (140, 108941), (158, 96530), (196, 77815), (197, 77420), (245, 62252), (316, 48265), (394, 38710), (395, 38612), (490, 31126), (553, 27580), (788, 19355), (790, 19306), (980, 15563), (985, 15484), (1106, 13790), (1379, 11060), (1580, 9653), (1970, 7742), (2212, 6895), (2758, 5530), (2765, 5516), (3871, 3940)]