21117740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{467}}^1$

素因数の和:519

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 35491540

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 28, 34, 35, 38, 68, 70, 76, 85, 95, 119, 133, 140, 170, 190, 238, 266, 323, 340, 380, 467, 476, 532, 595, 646, 665, 934, 1190, 1292, 1330, 1615, 1868, 2261, 2335, 2380, 2660, 3230, 3269, 4522, 4670, 6460, 6538, 7939, 8873, 9044, 9340, 11305, 13076, 15878, 16345, 17746, 22610, 31756, 32690, 35492, 39695, 44365, 45220, 55573, 62111, 65380, 79390, 88730, 111146, 124222, 150841, 158780, 177460, 222292, 248444, 277865, 301682, 310555, 555730, 603364, 621110, 754205, 1055887, 1111460, 1242220, 1508410, 2111774, 3016820, 4223548, 5279435, 10558870, 21117740]

約数ペア:

[(1, 21117740), (2, 10558870), (4, 5279435), (5, 4223548), (7, 3016820), (10, 2111774), (14, 1508410), (17, 1242220), (19, 1111460), (20, 1055887), (28, 754205), (34, 621110), (35, 603364), (38, 555730), (68, 310555), (70, 301682), (76, 277865), (85, 248444), (95, 222292), (119, 177460), (133, 158780), (140, 150841), (170, 124222), (190, 111146), (238, 88730), (266, 79390), (323, 65380), (340, 62111), (380, 55573), (467, 45220), (476, 44365), (532, 39695), (595, 35492), (646, 32690), (665, 31756), (934, 22610), (1190, 17746), (1292, 16345), (1330, 15878), (1615, 13076), (1868, 11305), (2261, 9340), (2335, 9044), (2380, 8873), (2660, 7939), (3230, 6538), (3269, 6460), (4522, 4670)]