18219908

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19882492

約数列:

[1, 2, 4, 7, 14, 28, 41, 59, 82, 118, 164, 236, 269, 287, 413, 538, 574, 826, 1076, 1148, 1652, 1883, 2419, 3766, 4838, 7532, 9676, 11029, 15871, 16933, 22058, 31742, 33866, 44116, 63484, 67732, 77203, 111097, 154406, 222194, 308812, 444388, 650711, 1301422, 2602844, 4554977, 9109954, 18219908]

約数ペア:

[(1, 18219908), (2, 9109954), (4, 4554977), (7, 2602844), (14, 1301422), (28, 650711), (41, 444388), (59, 308812), (82, 222194), (118, 154406), (164, 111097), (236, 77203), (269, 67732), (287, 63484), (413, 44116), (538, 33866), (574, 31742), (826, 22058), (1076, 16933), (1148, 15871), (1652, 11029), (1883, 9676), (2419, 7532), (3766, 4838)]