28939280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{241}}^1$

素因数の和:352

約数の個数: 80

約数和(自身を含む): 72019200

約数和(自身を除く): 43079920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 79, 80, 95, 152, 158, 190, 241, 304, 316, 380, 395, 482, 632, 760, 790, 964, 1205, 1264, 1501, 1520, 1580, 1928, 2410, 3002, 3160, 3856, 4579, 4820, 6004, 6320, 7505, 9158, 9640, 12008, 15010, 18316, 19039, 19280, 22895, 24016, 30020, 36632, 38078, 45790, 60040, 73264, 76156, 91580, 95195, 120080, 152312, 183160, 190390, 304624, 361741, 366320, 380780, 723482, 761560, 1446964, 1523120, 1808705, 2893928, 3617410, 5787856, 7234820, 14469640, 28939280]

約数ペア:

[(1, 28939280), (2, 14469640), (4, 7234820), (5, 5787856), (8, 3617410), (10, 2893928), (16, 1808705), (19, 1523120), (20, 1446964), (38, 761560), (40, 723482), (76, 380780), (79, 366320), (80, 361741), (95, 304624), (152, 190390), (158, 183160), (190, 152312), (241, 120080), (304, 95195), (316, 91580), (380, 76156), (395, 73264), (482, 60040), (632, 45790), (760, 38078), (790, 36632), (964, 30020), (1205, 24016), (1264, 22895), (1501, 19280), (1520, 19039), (1580, 18316), (1928, 15010), (2410, 12008), (3002, 9640), (3160, 9158), (3856, 7505), (4579, 6320), (4820, 6004)]