20878284

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1249}}^1$

素因数の和:1462

約数の個数: 48

約数和(自身を含む): 56000000

約数和(自身を除く): 35121716

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 199, 398, 597, 796, 1194, 1249, 1393, 2388, 2498, 2786, 3747, 4179, 4996, 5572, 7494, 8358, 8743, 14988, 16716, 17486, 26229, 34972, 52458, 104916, 248551, 497102, 745653, 994204, 1491306, 1739857, 2982612, 3479714, 5219571, 6959428, 10439142, 20878284]

約数ペア:

[(1, 20878284), (2, 10439142), (3, 6959428), (4, 5219571), (6, 3479714), (7, 2982612), (12, 1739857), (14, 1491306), (21, 994204), (28, 745653), (42, 497102), (84, 248551), (199, 104916), (398, 52458), (597, 34972), (796, 26229), (1194, 17486), (1249, 16716), (1393, 14988), (2388, 8743), (2498, 8358), (2786, 7494), (3747, 5572), (4179, 4996)]