28215990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2591}}^1$

素因数の和:2626

約数の個数: 72

約数和(自身を含む): 80668224

約数和(自身を除く): 52452234

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 121, 165, 198, 242, 330, 363, 495, 605, 726, 990, 1089, 1210, 1815, 2178, 2591, 3630, 5182, 5445, 7773, 10890, 12955, 15546, 23319, 25910, 28501, 38865, 46638, 57002, 77730, 85503, 116595, 142505, 171006, 233190, 256509, 285010, 313511, 427515, 513018, 627022, 855030, 940533, 1282545, 1567555, 1881066, 2565090, 2821599, 3135110, 4702665, 5643198, 9405330, 14107995, 28215990]

約数ペア:

[(1, 28215990), (2, 14107995), (3, 9405330), (5, 5643198), (6, 4702665), (9, 3135110), (10, 2821599), (11, 2565090), (15, 1881066), (18, 1567555), (22, 1282545), (30, 940533), (33, 855030), (45, 627022), (55, 513018), (66, 427515), (90, 313511), (99, 285010), (110, 256509), (121, 233190), (165, 171006), (198, 142505), (242, 116595), (330, 85503), (363, 77730), (495, 57002), (605, 46638), (726, 38865), (990, 28501), (1089, 25910), (1210, 23319), (1815, 15546), (2178, 12955), (2591, 10890), (3630, 7773), (5182, 5445)]