19956516

素因数分解:

$2^2\times 3^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 47913600

約数和(自身を除く): 27957084

約数列:

[1, 2, 3, 4, 6, 12, 61, 122, 137, 183, 199, 244, 274, 366, 398, 411, 548, 597, 732, 796, 822, 1194, 1644, 2388, 8357, 12139, 16714, 24278, 25071, 27263, 33428, 36417, 48556, 50142, 54526, 72834, 81789, 100284, 109052, 145668, 163578, 327156, 1663043, 3326086, 4989129, 6652172, 9978258, 19956516]

約数ペア:

[(1, 19956516), (2, 9978258), (3, 6652172), (4, 4989129), (6, 3326086), (12, 1663043), (61, 327156), (122, 163578), (137, 145668), (183, 109052), (199, 100284), (244, 81789), (274, 72834), (366, 54526), (398, 50142), (411, 48556), (548, 36417), (597, 33428), (732, 27263), (796, 25071), (822, 24278), (1194, 16714), (1644, 12139), (2388, 8357)]