28938520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 77112000

約数和(自身を除く): 48173480

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 29, 38, 40, 52, 58, 65, 76, 95, 101, 104, 116, 130, 145, 152, 190, 202, 232, 247, 260, 290, 377, 380, 404, 494, 505, 520, 551, 580, 754, 760, 808, 988, 1010, 1102, 1160, 1235, 1313, 1508, 1885, 1919, 1976, 2020, 2204, 2470, 2626, 2755, 2929, 3016, 3770, 3838, 4040, 4408, 4940, 5252, 5510, 5858, 6565, 7163, 7540, 7676, 9595, 9880, 10504, 11020, 11716, 13130, 14326, 14645, 15080, 15352, 19190, 22040, 23432, 24947, 26260, 28652, 29290, 35815, 38077, 38380, 49894, 52520, 55651, 57304, 58580, 71630, 76154, 76760, 99788, 111302, 117160, 124735, 143260, 152308, 190385, 199576, 222604, 249470, 278255, 286520, 304616, 380770, 445208, 498940, 556510, 723463, 761540, 997880, 1113020, 1446926, 1523080, 2226040, 2893852, 3617315, 5787704, 7234630, 14469260, 28938520]

約数ペア:

[(1, 28938520), (2, 14469260), (4, 7234630), (5, 5787704), (8, 3617315), (10, 2893852), (13, 2226040), (19, 1523080), (20, 1446926), (26, 1113020), (29, 997880), (38, 761540), (40, 723463), (52, 556510), (58, 498940), (65, 445208), (76, 380770), (95, 304616), (101, 286520), (104, 278255), (116, 249470), (130, 222604), (145, 199576), (152, 190385), (190, 152308), (202, 143260), (232, 124735), (247, 117160), (260, 111302), (290, 99788), (377, 76760), (380, 76154), (404, 71630), (494, 58580), (505, 57304), (520, 55651), (551, 52520), (580, 49894), (754, 38380), (760, 38077), (808, 35815), (988, 29290), (1010, 28652), (1102, 26260), (1160, 24947), (1235, 23432), (1313, 22040), (1508, 19190), (1885, 15352), (1919, 15080), (1976, 14645), (2020, 14326), (2204, 13130), (2470, 11716), (2626, 11020), (2755, 10504), (2929, 9880), (3016, 9595), (3770, 7676), (3838, 7540), (4040, 7163), (4408, 6565), (4940, 5858), (5252, 5510)]