28256360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:602

約数の個数: 64

約数和(自身を含む): 69984000

約数和(自身を除く): 41727640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 149, 220, 298, 431, 440, 596, 745, 862, 1192, 1490, 1639, 1724, 2155, 2980, 3278, 3448, 4310, 4741, 5960, 6556, 8195, 8620, 9482, 13112, 16390, 17240, 18964, 23705, 32780, 37928, 47410, 64219, 65560, 94820, 128438, 189640, 256876, 321095, 513752, 642190, 706409, 1284380, 1412818, 2568760, 2825636, 3532045, 5651272, 7064090, 14128180, 28256360]

約数ペア:

[(1, 28256360), (2, 14128180), (4, 7064090), (5, 5651272), (8, 3532045), (10, 2825636), (11, 2568760), (20, 1412818), (22, 1284380), (40, 706409), (44, 642190), (55, 513752), (88, 321095), (110, 256876), (149, 189640), (220, 128438), (298, 94820), (431, 65560), (440, 64219), (596, 47410), (745, 37928), (862, 32780), (1192, 23705), (1490, 18964), (1639, 17240), (1724, 16390), (2155, 13112), (2980, 9482), (3278, 8620), (3448, 8195), (4310, 6556), (4741, 5960)]