28638320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 71245440

約数和(自身を除く): 42607120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 83, 95, 152, 166, 190, 227, 304, 332, 380, 415, 454, 664, 760, 830, 908, 1135, 1328, 1520, 1577, 1660, 1816, 2270, 3154, 3320, 3632, 4313, 4540, 6308, 6640, 7885, 8626, 9080, 12616, 15770, 17252, 18160, 18841, 21565, 25232, 31540, 34504, 37682, 43130, 63080, 69008, 75364, 86260, 94205, 126160, 150728, 172520, 188410, 301456, 345040, 357979, 376820, 715958, 753640, 1431916, 1507280, 1789895, 2863832, 3579790, 5727664, 7159580, 14319160, 28638320]

約数ペア:

[(1, 28638320), (2, 14319160), (4, 7159580), (5, 5727664), (8, 3579790), (10, 2863832), (16, 1789895), (19, 1507280), (20, 1431916), (38, 753640), (40, 715958), (76, 376820), (80, 357979), (83, 345040), (95, 301456), (152, 188410), (166, 172520), (190, 150728), (227, 126160), (304, 94205), (332, 86260), (380, 75364), (415, 69008), (454, 63080), (664, 43130), (760, 37682), (830, 34504), (908, 31540), (1135, 25232), (1328, 21565), (1520, 18841), (1577, 18160), (1660, 17252), (1816, 15770), (2270, 12616), (3154, 9080), (3320, 8626), (3632, 7885), (4313, 6640), (4540, 6308)]