21474940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1823}}^1$

素因数の和:1882

約数の個数: 48

約数和(自身を含む): 49029120

約数和(自身を除く): 27554180

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 1823, 2356, 2945, 3646, 5890, 7292, 9115, 11780, 18230, 34637, 36460, 56513, 69274, 113026, 138548, 173185, 226052, 282565, 346370, 565130, 692740, 1073747, 1130260, 2147494, 4294988, 5368735, 10737470, 21474940]

約数ペア:

[(1, 21474940), (2, 10737470), (4, 5368735), (5, 4294988), (10, 2147494), (19, 1130260), (20, 1073747), (31, 692740), (38, 565130), (62, 346370), (76, 282565), (95, 226052), (124, 173185), (155, 138548), (190, 113026), (310, 69274), (380, 56513), (589, 36460), (620, 34637), (1178, 18230), (1823, 11780), (2356, 9115), (2945, 7292), (3646, 5890)]