21295450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1303

約数の個数: 48

約数和(自身を含む): 44640000

約数和(自身を除く): 23344550

約数列:

[1, 2, 5, 10, 11, 22, 25, 31, 50, 55, 62, 110, 155, 275, 310, 341, 550, 682, 775, 1249, 1550, 1705, 2498, 3410, 6245, 8525, 12490, 13739, 17050, 27478, 31225, 38719, 62450, 68695, 77438, 137390, 193595, 343475, 387190, 425909, 686950, 851818, 967975, 1935950, 2129545, 4259090, 10647725, 21295450]

約数ペア:

[(1, 21295450), (2, 10647725), (5, 4259090), (10, 2129545), (11, 1935950), (22, 967975), (25, 851818), (31, 686950), (50, 425909), (55, 387190), (62, 343475), (110, 193595), (155, 137390), (275, 77438), (310, 68695), (341, 62450), (550, 38719), (682, 31225), (775, 27478), (1249, 17050), (1550, 13739), (1705, 12490), (2498, 8525), (3410, 6245)]