19228180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{179}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 22684460

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 131, 164, 179, 205, 262, 358, 410, 524, 655, 716, 820, 895, 1310, 1790, 2620, 3580, 5371, 7339, 10742, 14678, 21484, 23449, 26855, 29356, 36695, 46898, 53710, 73390, 93796, 107420, 117245, 146780, 234490, 468980, 961409, 1922818, 3845636, 4807045, 9614090, 19228180]

約数ペア:

[(1, 19228180), (2, 9614090), (4, 4807045), (5, 3845636), (10, 1922818), (20, 961409), (41, 468980), (82, 234490), (131, 146780), (164, 117245), (179, 107420), (205, 93796), (262, 73390), (358, 53710), (410, 46898), (524, 36695), (655, 29356), (716, 26855), (820, 23449), (895, 21484), (1310, 14678), (1790, 10742), (2620, 7339), (3580, 5371)]