19932380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2473}}^1$

素因数の和:2526

約数の個数: 48

約数和(自身を含む): 46550784

約数和(自身を除く): 26618404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2473, 4030, 4946, 8060, 9892, 12365, 24730, 32149, 49460, 64298, 76663, 128596, 153326, 160745, 306652, 321490, 383315, 642980, 766630, 996619, 1533260, 1993238, 3986476, 4983095, 9966190, 19932380]

約数ペア:

[(1, 19932380), (2, 9966190), (4, 4983095), (5, 3986476), (10, 1993238), (13, 1533260), (20, 996619), (26, 766630), (31, 642980), (52, 383315), (62, 321490), (65, 306652), (124, 160745), (130, 153326), (155, 128596), (260, 76663), (310, 64298), (403, 49460), (620, 32149), (806, 24730), (1612, 12365), (2015, 9892), (2473, 8060), (4030, 4946)]